diff --git a/CHANGELOG.md b/CHANGELOG.md
index db5d9e24..e6020a2f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ The **"Breaking Changes"** listed below are changes that have been made in the d
 - The New Map dialog now gives an option to specify the "Show Location Name" field.
 - Some new shortcuts were added in [porymap/#290](https://github.com/huderlem/porymap/pull/290).
 - All plain text boxes now have a clear button to delete the text.
+- The window sizes and positions of the tileset editor, palette editor, and region map editor are now stored in `porymap.cfg`.
 
 ### Changed
 - Holding `shift` now toggles "Smart Path" drawing; when the "Smart Paths" checkbox is checked, holding `shift` will temporarily disable it.
diff --git a/forms/paletteeditor.ui b/forms/paletteeditor.ui
index 03650e9f..b87b4398 100644
--- a/forms/paletteeditor.ui
+++ b/forms/paletteeditor.ui
@@ -14,7 +14,7 @@
    <enum>Qt::ClickFocus</enum>
   </property>
   <property name="windowTitle">
-   <string>MainWindow</string>
+   <string>Palette Editor</string>
   </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QVBoxLayout" name="verticalLayout">
diff --git a/include/config.h b/include/config.h
index 4bd21cfe..008eeeb7 100644
--- a/include/config.h
+++ b/include/config.h
@@ -50,7 +50,10 @@ public:
     void setRecentMap(QString map);
     void setMapSortOrder(MapSortOrder order);
     void setPrettyCursors(bool enabled);
-    void setGeometry(QByteArray, QByteArray, QByteArray, QByteArray);
+    void setMainGeometry(QByteArray, QByteArray, QByteArray, QByteArray);
+    void setTilesetEditorGeometry(QByteArray, QByteArray);
+    void setPaletteEditorGeometry(QByteArray, QByteArray);
+    void setRegionMapEditorGeometry(QByteArray, QByteArray);
     void setCollisionOpacity(int opacity);
     void setMetatilesZoom(int zoom);
     void setShowPlayerView(bool enabled);
@@ -62,7 +65,10 @@ public:
     QString getRecentMap();
     MapSortOrder getMapSortOrder();
     bool getPrettyCursors();
-    QMap<QString, QByteArray> getGeometry();
+    QMap<QString, QByteArray> getMainGeometry();
+    QMap<QString, QByteArray> getTilesetEditorGeometry();
+    QMap<QString, QByteArray> getPaletteEditorGeometry();
+    QMap<QString, QByteArray> getRegionMapEditorGeometry();
     int getCollisionOpacity();
     int getMetatilesZoom();
     bool getShowPlayerView();
@@ -83,11 +89,17 @@ private:
     QByteArray bytesFromString(QString);
     MapSortOrder mapSortOrder;
     bool prettyCursors;
-    QByteArray windowGeometry;
-    QByteArray windowState;
+    QByteArray mainWindowGeometry;
+    QByteArray mainWindowState;
     QByteArray mapSplitterState;
     QByteArray eventsSlpitterState;
     QByteArray mainSplitterState;
+    QByteArray tilesetEditorGeometry;
+    QByteArray tilesetEditorState;
+    QByteArray paletteEditorGeometry;
+    QByteArray paletteEditorState;
+    QByteArray regionMapEditorGeometry;
+    QByteArray regionMapEditorState;
     int collisionOpacity;
     int metatilesZoom;
     bool showPlayerView;
diff --git a/include/ui/paletteeditor.h b/include/ui/paletteeditor.h
index 9cd4da03..2dbd6d29 100644
--- a/include/ui/paletteeditor.h
+++ b/include/ui/paletteeditor.h
@@ -45,7 +45,9 @@ private:
     void refreshColor(int);
     void setColor(int);
     void commitEditHistory(int paletteid);
+    void restoreWindowState();
     void setColorsFromHistory(PaletteHistoryItem*, int);
+    void closeEvent(QCloseEvent*);
 
 signals:
     void closed();
diff --git a/include/ui/regionmapeditor.h b/include/ui/regionmapeditor.h
index a664df77..484103f3 100644
--- a/include/ui/regionmapeditor.h
+++ b/include/ui/regionmapeditor.h
@@ -97,6 +97,7 @@ private:
     bool createCityMap(QString name);
     bool tryInsertNewMapEntry(QString);
 
+    void restoreWindowState();
     void closeEvent(QCloseEvent* event);
 
 private slots:
diff --git a/include/ui/tileseteditor.h b/include/ui/tileseteditor.h
index fde5a4be..283f9cde 100644
--- a/include/ui/tileseteditor.h
+++ b/include/ui/tileseteditor.h
@@ -37,8 +37,9 @@ class TilesetEditor : public QMainWindow
 public:
     explicit TilesetEditor(Project*, Map*, QWidget *parent = nullptr);
     ~TilesetEditor();
-    void setMap(Map*);
-    void setTilesets(QString, QString);
+    void update(Map *map, QString primaryTilsetLabel, QString secondaryTilesetLabel);
+    void updateMap(Map *map);
+    void updateTilesets(QString primaryTilsetLabel, QString secondaryTilesetLabel);
     bool selectMetatile(uint16_t metatileId);
 
 private slots:
@@ -92,17 +93,25 @@ private slots:
     void on_actionImport_Secondary_Metatiles_triggered();
 
 private:
-    void init(Project*, Map*);
-    void closeEvent(QCloseEvent*);
-    void initMetatileSelector(Map*);
+    void initUi();
+    void setMetatileBehaviors();
+    void setMetatileLayersUi();
+    void setVersionSpecificUi();
+    void setMetatileLabelValidator();
+    void initMetatileSelector();
     void initTileSelector();
     void initSelectedTileItem();
     void initMetatileLayersItem();
+    void restoreWindowState();
+    void initMetatileHistory();
+    void setTilesets(QString primaryTilesetLabel, QString secondaryTilesetLabel);
+    void reset();
     void drawSelectedTiles();
     void importTilesetTiles(Tileset*, bool);
     void importTilesetMetatiles(Tileset*, bool);
     void refresh();
     void saveMetatileLabel();
+    void closeEvent(QCloseEvent*);
     Ui::TilesetEditor *ui;
     History<MetatileHistoryItem*> metatileHistory;
     TilesetEditorMetatileSelector *metatileSelector = nullptr;
@@ -110,6 +119,7 @@ private:
     MetatileLayersItem *metatileLayersItem = nullptr;
     PaletteEditor *paletteEditor = nullptr;
     Project *project = nullptr;
+    Map *map = nullptr;
     Metatile *metatile = nullptr;
     int paletteId;
     bool tileXFlip;
diff --git a/src/config.cpp b/src/config.cpp
index 8934f707..3c9fe33d 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -122,10 +122,10 @@ void PorymapConfig::parseConfigKeyValue(QString key, QString value) {
             this->mapSortOrder = MapSortOrder::Group;
             logWarn(QString("Invalid config value for map_sort_order: '%1'. Must be 'group', 'area', or 'layout'.").arg(value));
         }
-    } else if (key == "window_geometry") {
-        this->windowGeometry = bytesFromString(value);
-    } else if (key == "window_state") {
-        this->windowState = bytesFromString(value);
+    } else if (key == "main_window_geometry") {
+        this->mainWindowGeometry = bytesFromString(value);
+    } else if (key == "main_window_state") {
+        this->mainWindowState = bytesFromString(value);
     } else if (key == "map_splitter_state") {
         this->mapSplitterState = bytesFromString(value);
     } else if (key == "main_splitter_state") {
@@ -137,6 +137,18 @@ void PorymapConfig::parseConfigKeyValue(QString key, QString value) {
             logWarn(QString("Invalid config value for collision_opacity: '%1'. Must be an integer.").arg(value));
             this->collisionOpacity = 50;
         }
+    } else if (key == "tileset_editor_geometry") {
+        this->tilesetEditorGeometry = bytesFromString(value);
+    } else if (key == "tileset_editor_state") {
+        this->tilesetEditorState = bytesFromString(value);
+    } else if (key == "palette_editor_geometry") {
+        this->paletteEditorGeometry = bytesFromString(value);
+    } else if (key == "palette_editor_state") {
+        this->paletteEditorState = bytesFromString(value);
+    } else if (key == "region_map_editor_geometry") {
+        this->regionMapEditorGeometry = bytesFromString(value);
+    } else if (key == "region_map_editor_state") {
+        this->regionMapEditorState = bytesFromString(value);
     } else if (key == "metatiles_zoom") {
         bool ok;
         this->metatilesZoom = qMax(10, qMin(100, value.toInt(&ok)));
@@ -186,10 +198,16 @@ QMap<QString, QString> PorymapConfig::getKeyValueMap() {
     map.insert("recent_map", this->recentMap);
     map.insert("pretty_cursors", this->prettyCursors ? "1" : "0");
     map.insert("map_sort_order", mapSortOrderMap.value(this->mapSortOrder));
-    map.insert("window_geometry", stringFromByteArray(this->windowGeometry));
-    map.insert("window_state", stringFromByteArray(this->windowState));
+    map.insert("main_window_geometry", stringFromByteArray(this->mainWindowGeometry));
+    map.insert("main_window_state", stringFromByteArray(this->mainWindowState));
     map.insert("map_splitter_state", stringFromByteArray(this->mapSplitterState));
     map.insert("main_splitter_state", stringFromByteArray(this->mainSplitterState));
+    map.insert("tileset_editor_geometry", stringFromByteArray(this->tilesetEditorGeometry));
+    map.insert("tileset_editor_state", stringFromByteArray(this->tilesetEditorState));
+    map.insert("palette_editor_geometry", stringFromByteArray(this->paletteEditorGeometry));
+    map.insert("palette_editor_state", stringFromByteArray(this->paletteEditorState));
+    map.insert("region_map_editor_geometry", stringFromByteArray(this->regionMapEditorGeometry));
+    map.insert("region_map_editor_state", stringFromByteArray(this->regionMapEditorState));
     map.insert("collision_opacity", QString("%1").arg(this->collisionOpacity));
     map.insert("metatiles_zoom", QString("%1").arg(this->metatilesZoom));
     map.insert("show_player_view", this->showPlayerView ? "1" : "0");
@@ -243,15 +261,33 @@ void PorymapConfig::setMonitorFiles(bool monitor) {
     this->save();
 }
 
-void PorymapConfig::setGeometry(QByteArray windowGeometry_, QByteArray windowState_,
+void PorymapConfig::setMainGeometry(QByteArray mainWindowGeometry_, QByteArray mainWindowState_,
                                 QByteArray mapSplitterState_, QByteArray mainSplitterState_) {
-    this->windowGeometry = windowGeometry_;
-    this->windowState = windowState_;
+    this->mainWindowGeometry = mainWindowGeometry_;
+    this->mainWindowState = mainWindowState_;
     this->mapSplitterState = mapSplitterState_;
     this->mainSplitterState = mainSplitterState_;
     this->save();
 }
 
+void PorymapConfig::setTilesetEditorGeometry(QByteArray tilesetEditorGeometry_, QByteArray tilesetEditorState_) {
+    this->tilesetEditorGeometry = tilesetEditorGeometry_;
+    this->tilesetEditorState = tilesetEditorState_;
+    this->save();
+}
+
+void PorymapConfig::setPaletteEditorGeometry(QByteArray paletteEditorGeometry_, QByteArray paletteEditorState_) {
+    this->paletteEditorGeometry = paletteEditorGeometry_;
+    this->paletteEditorState = paletteEditorState_;
+    this->save();
+}
+
+void PorymapConfig::setRegionMapEditorGeometry(QByteArray regionMapEditorGeometry_, QByteArray regionMapEditorState_) {
+    this->regionMapEditorGeometry = regionMapEditorGeometry_;
+    this->regionMapEditorState = regionMapEditorState_;
+    this->save();
+}
+
 void PorymapConfig::setCollisionOpacity(int opacity) {
     this->collisionOpacity = opacity;
     // don't auto-save here because this can be called very frequently.
@@ -296,17 +332,44 @@ bool PorymapConfig::getPrettyCursors() {
     return this->prettyCursors;
 }
 
-QMap<QString, QByteArray> PorymapConfig::getGeometry() {
+QMap<QString, QByteArray> PorymapConfig::getMainGeometry() {
     QMap<QString, QByteArray> geometry;
 
-    geometry.insert("window_geometry", this->windowGeometry);
-    geometry.insert("window_state", this->windowState);
+    geometry.insert("main_window_geometry", this->mainWindowGeometry);
+    geometry.insert("main_window_state", this->mainWindowState);
     geometry.insert("map_splitter_state", this->mapSplitterState);
     geometry.insert("main_splitter_state", this->mainSplitterState);
 
     return geometry;
 }
 
+QMap<QString, QByteArray> PorymapConfig::getTilesetEditorGeometry() {
+    QMap<QString, QByteArray> geometry;
+
+    geometry.insert("tileset_editor_geometry", this->tilesetEditorGeometry);
+    geometry.insert("tileset_editor_state", this->tilesetEditorState);
+
+    return geometry;
+}
+
+QMap<QString, QByteArray> PorymapConfig::getPaletteEditorGeometry() {
+    QMap<QString, QByteArray> geometry;
+
+    geometry.insert("palette_editor_geometry", this->paletteEditorGeometry);
+    geometry.insert("palette_editor_state", this->paletteEditorState);
+
+    return geometry;
+}
+
+QMap<QString, QByteArray> PorymapConfig::getRegionMapEditorGeometry() {
+    QMap<QString, QByteArray> geometry;
+
+    geometry.insert("region_map_editor_geometry", this->regionMapEditorGeometry);
+    geometry.insert("region_map_editor_state", this->regionMapEditorState);
+
+    return geometry;
+}
+
 int PorymapConfig::getCollisionOpacity() {
     return this->collisionOpacity;
 }
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 7c4436bf..27d67427 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -364,10 +364,10 @@ void MainWindow::loadUserSettings() {
 }
 
 void MainWindow::restoreWindowState() {
-    logInfo("Restoring window geometry from previous session.");
-    QMap<QString, QByteArray> geometry = porymapConfig.getGeometry();
-    this->restoreGeometry(geometry.value("window_geometry"));
-    this->restoreState(geometry.value("window_state"));
+    logInfo("Restoring main window geometry from previous session.");
+    QMap<QString, QByteArray> geometry = porymapConfig.getMainGeometry();
+    this->restoreGeometry(geometry.value("main_window_geometry"));
+    this->restoreState(geometry.value("main_window_state"));
     this->ui->splitter_map->restoreState(geometry.value("map_splitter_state"));
     this->ui->splitter_main->restoreState(geometry.value("main_splitter_state"));
 }
@@ -1220,8 +1220,11 @@ void MainWindow::on_actionNew_Tileset_triggered() {
 
 void MainWindow::updateTilesetEditor() {
     if (this->tilesetEditor) {
-        this->tilesetEditor->setMap(this->editor->map);
-        this->tilesetEditor->setTilesets(editor->ui->comboBox_PrimaryTileset->currentText(), editor->ui->comboBox_SecondaryTileset->currentText());
+        this->tilesetEditor->update(
+            this->editor->map,
+            editor->ui->comboBox_PrimaryTileset->currentText(),
+            editor->ui->comboBox_SecondaryTileset->currentText()
+        );
     }
 }
 
@@ -2532,7 +2535,6 @@ void MainWindow::on_actionTileset_Editor_triggered()
         this->tilesetEditor = new TilesetEditor(this->editor->project, this->editor->map, this);
         connect(this->tilesetEditor, SIGNAL(tilesetsSaved(QString, QString)), this, SLOT(onTilesetsSaved(QString, QString)));
         connect(this->tilesetEditor, &QObject::destroyed, [=](QObject *) { this->tilesetEditor = nullptr; });
-        this->tilesetEditor->setAttribute(Qt::WA_DeleteOnClose);
     }
 
     if (!this->tilesetEditor->isVisible()) {
@@ -2672,7 +2674,6 @@ void MainWindow::on_actionRegion_Map_Editor_triggered() {
             return;
         }
         connect(this->regionMapEditor, &QObject::destroyed, [=](QObject *) { this->regionMapEditor = nullptr; });
-        this->regionMapEditor->setAttribute(Qt::WA_DeleteOnClose);
     }
 
     if (!this->regionMapEditor->isVisible()) {
@@ -2711,7 +2712,7 @@ void MainWindow::closeEvent(QCloseEvent *event) {
         }
     }
 
-    porymapConfig.setGeometry(
+    porymapConfig.setMainGeometry(
         this->saveGeometry(),
         this->saveState(),
         this->ui->splitter_map->saveState(),
diff --git a/src/mainwindow_scriptapi.cpp b/src/mainwindow_scriptapi.cpp
index cc89fc0b..b60ba820 100644
--- a/src/mainwindow_scriptapi.cpp
+++ b/src/mainwindow_scriptapi.cpp
@@ -247,7 +247,7 @@ void MainWindow::addImage(int x, int y, QString filepath) {
 
 void MainWindow::refreshAfterPaletteChange(Tileset *tileset) {
     if (this->tilesetEditor) {
-        this->tilesetEditor->setTilesets(this->editor->map->layout->tileset_primary_label, this->editor->map->layout->tileset_secondary_label);
+        this->tilesetEditor->updateTilesets(this->editor->map->layout->tileset_primary_label, this->editor->map->layout->tileset_secondary_label);
     }
     this->editor->metatile_selector_item->draw();
     this->editor->selected_border_metatiles_item->draw();
diff --git a/src/ui/paletteeditor.cpp b/src/ui/paletteeditor.cpp
index fd9eeb9a..0e1366e6 100644
--- a/src/ui/paletteeditor.cpp
+++ b/src/ui/paletteeditor.cpp
@@ -1,9 +1,10 @@
 #include "paletteeditor.h"
 #include "ui_paletteeditor.h"
 #include "paletteutil.h"
+#include "config.h"
+#include "log.h"
 #include <QFileDialog>
 #include <QMessageBox>
-#include "log.h"
 
 PaletteEditor::PaletteEditor(Project *project, Tileset *primaryTileset, Tileset *secondaryTileset, int paletteId, QWidget *parent) :
     QMainWindow(parent),
@@ -112,6 +113,7 @@ PaletteEditor::PaletteEditor(Project *project, Tileset *primaryTileset, Tileset
     this->initColorSliders();
     this->setPaletteId(paletteId);
     this->commitEditHistory(this->ui->spinBox_PaletteId->value());
+    this->restoreWindowState();
 }
 
 PaletteEditor::~PaletteEditor()
@@ -227,6 +229,13 @@ void PaletteEditor::commitEditHistory(int paletteId) {
     this->palettesHistory[paletteId].push(commit);
 }
 
+void PaletteEditor::restoreWindowState() {
+    logInfo("Restoring palette editor geometry from previous session.");
+    QMap<QString, QByteArray> geometry = porymapConfig.getPaletteEditorGeometry();
+    this->restoreGeometry(geometry.value("palette_editor_geometry"));
+    this->restoreState(geometry.value("palette_editor_state"));
+}
+
 void PaletteEditor::on_actionUndo_triggered()
 {
     int paletteId = this->ui->spinBox_PaletteId->value();
@@ -311,3 +320,10 @@ void PaletteEditor::on_actionImport_Palette_triggered()
     this->commitEditHistory(paletteId);
     emit this->changedPaletteColor();
 }
+
+void PaletteEditor::closeEvent(QCloseEvent*) {
+    porymapConfig.setPaletteEditorGeometry(
+        this->saveGeometry(),
+        this->saveState()
+    );
+}
diff --git a/src/ui/regionmapeditor.cpp b/src/ui/regionmapeditor.cpp
index 1ced19b6..ce3440dd 100644
--- a/src/ui/regionmapeditor.cpp
+++ b/src/ui/regionmapeditor.cpp
@@ -24,6 +24,7 @@ RegionMapEditor::RegionMapEditor(QWidget *parent, Project *project_) :
     this->project = project_;
     this->region_map = new RegionMap;
     this->ui->action_RegionMap_Resize->setVisible(false);
+    this->restoreWindowState();
 }
 
 RegionMapEditor::~RegionMapEditor()
@@ -42,6 +43,13 @@ RegionMapEditor::~RegionMapEditor()
     delete scene_region_map_tiles;
 }
 
+void RegionMapEditor::restoreWindowState() {
+    logInfo("Restoring region map editor geometry from previous session.");
+    QMap<QString, QByteArray> geometry = porymapConfig.getRegionMapEditorGeometry();
+    this->restoreGeometry(geometry.value("region_map_editor_geometry"));
+    this->restoreState(geometry.value("region_map_editor_state"));
+}
+
 void RegionMapEditor::on_action_RegionMap_Save_triggered() {
     setCurrentSquareOptions();
     if (project && region_map) {
@@ -899,6 +907,11 @@ void RegionMapEditor::closeEvent(QCloseEvent *event)
     } else {
         event->accept();
     }
+
+    porymapConfig.setRegionMapEditorGeometry(
+        this->saveGeometry(),
+        this->saveState()
+    );
 }
 
 void RegionMapEditor::on_verticalSlider_Zoom_Map_Image_valueChanged(int val) {
diff --git a/src/ui/tileseteditor.cpp b/src/ui/tileseteditor.cpp
index 75a60b9a..950b8d46 100644
--- a/src/ui/tileseteditor.cpp
+++ b/src/ui/tileseteditor.cpp
@@ -14,10 +14,14 @@
 
 TilesetEditor::TilesetEditor(Project *project, Map *map, QWidget *parent) :
     QMainWindow(parent),
-    ui(new Ui::TilesetEditor)
+    ui(new Ui::TilesetEditor),
+    project(project),
+    map(map),
+    hasUnsavedChanges(false)
 {
-    this->init(project, map);
-    new QShortcut(QKeySequence("Ctrl+Shift+Z"), this, SLOT(on_actionRedo_triggered()));
+    this->setTilesets(this->map->layout->tileset_primary_label, this->map->layout->tileset_secondary_label);
+    this->initUi();
+    this->initMetatileHistory();
 }
 
 TilesetEditor::~TilesetEditor()
@@ -37,27 +41,78 @@ TilesetEditor::~TilesetEditor()
     delete metatileLayersScene;
 }
 
-void TilesetEditor::init(Project *project, Map *map) {
-    ui->setupUi(this);
-    this->project = project;
+void TilesetEditor::update(Map *map, QString primaryTilesetLabel, QString secondaryTilesetLabel) {
+    this->updateMap(map);
+    this->updateTilesets(primaryTilesetLabel, secondaryTilesetLabel);
+}
 
+void TilesetEditor::updateMap(Map *map) {
+    this->map = map;
+    this->metatileSelector->map = map;
+}
+
+void TilesetEditor::updateTilesets(QString primaryTilesetLabel, QString secondaryTilesetLabel) {
+    if (this->hasUnsavedChanges) {
+        QMessageBox::StandardButton result = QMessageBox::question(
+            this,
+            "porymap",
+            "Tileset has been modified, save changes?",
+            QMessageBox::No | QMessageBox::Yes,
+            QMessageBox::Yes);
+        if (result == QMessageBox::Yes)
+            this->on_actionSave_Tileset_triggered();
+    }
     this->hasUnsavedChanges = false;
-    this->tileXFlip = ui->checkBox_xFlip->isChecked();
-    this->tileYFlip = ui->checkBox_yFlip->isChecked();
-    this->paletteId = ui->spinBox_paletteSelector->value();
+    this->setTilesets(primaryTilesetLabel, secondaryTilesetLabel);
+    this->refresh();
+}
 
-    Tileset *primaryTileset = project->getTileset(map->layout->tileset_primary_label);
-    Tileset *secondaryTileset = project->getTileset(map->layout->tileset_secondary_label);
+bool TilesetEditor::selectMetatile(uint16_t metatileId) {
+    if (!Tileset::metatileIsValid(metatileId, this->primaryTileset, this->secondaryTileset)) return false;
+    this->metatileSelector->select(metatileId);
+    QPoint pos = this->metatileSelector->getMetatileIdCoordsOnWidget(metatileId);
+    this->ui->scrollArea_Metatiles->ensureVisible(pos.x(), pos.y());
+    return true;
+}
+
+void TilesetEditor::setTilesets(QString primaryTilesetLabel, QString secondaryTilesetLabel) {
+    Tileset *primaryTileset = project->getTileset(primaryTilesetLabel);
+    Tileset *secondaryTileset = project->getTileset(secondaryTilesetLabel);
     if (this->primaryTileset) delete this->primaryTileset;
     if (this->secondaryTileset) delete this->secondaryTileset;
     this->primaryTileset = primaryTileset->copy();
     this->secondaryTileset = secondaryTileset->copy();
+}
 
-    QList<QString> sortedBehaviors;
+void TilesetEditor::initUi() {
+    ui->setupUi(this);
+    new QShortcut(QKeySequence("Ctrl+Shift+Z"), this, SLOT(on_actionRedo_triggered()));
+    this->tileXFlip = ui->checkBox_xFlip->isChecked();
+    this->tileYFlip = ui->checkBox_yFlip->isChecked();
+    this->paletteId = ui->spinBox_paletteSelector->value();
+    this->ui->spinBox_paletteSelector->setMinimum(0);
+    this->ui->spinBox_paletteSelector->setMaximum(Project::getNumPalettesTotal() - 1);
+
+    this->setMetatileBehaviors();
+    this->setMetatileLayersUi();
+    this->setVersionSpecificUi();
+    this->setMetatileLabelValidator();
+
+    this->initMetatileSelector();
+    this->initMetatileLayersItem();
+    this->initTileSelector();
+    this->initSelectedTileItem();
+    this->metatileSelector->select(0);
+    this->restoreWindowState();
+}
+
+void TilesetEditor::setMetatileBehaviors() {
     for (int num : project->metatileBehaviorMapInverse.keys()) {
         this->ui->comboBox_metatileBehaviors->addItem(project->metatileBehaviorMapInverse[num], num);
     }
+}
 
+void TilesetEditor::setMetatileLayersUi() {
     if (!projectConfig.getTripleLayerMetatilesEnabled()) {
         this->ui->comboBox_layerType->addItem("Normal - Middle/Top", 0);
         this->ui->comboBox_layerType->addItem("Covered - Bottom/Middle", 1);
@@ -67,10 +122,9 @@ void TilesetEditor::init(Project *project, Map *map) {
         this->ui->label_layerType->setVisible(false);
         this->ui->label_BottomTop->setText("Bottom/Middle/Top");
     }
+}
 
-    this->ui->spinBox_paletteSelector->setMinimum(0);
-    this->ui->spinBox_paletteSelector->setMaximum(Project::getNumPalettesTotal() - 1);
-
+void TilesetEditor::setVersionSpecificUi() {
     if (projectConfig.getBaseGameVersion() == BaseGameVersion::pokefirered) {
         this->ui->comboBox_encounterType->setVisible(true);
         this->ui->label_encounterType->setVisible(true);
@@ -89,72 +143,18 @@ void TilesetEditor::init(Project *project, Map *map) {
         this->ui->comboBox_terrainType->setVisible(false);
         this->ui->label_terrainType->setVisible(false);
     }
+}
 
+void TilesetEditor::setMetatileLabelValidator() {
     //only allow characters valid for a symbol
     QRegExp expression("[_A-Za-z0-9]*$");
     QRegExpValidator *validator = new QRegExpValidator(expression);
     this->ui->lineEdit_metatileLabel->setValidator(validator);
-
-    this->initMetatileSelector(map);
-    this->initMetatileLayersItem();
-    this->initTileSelector();
-    this->initSelectedTileItem();
-    this->metatileSelector->select(0);
-
-    MetatileHistoryItem *commit = new MetatileHistoryItem(0, nullptr, this->metatile->copy());
-    metatileHistory.push(commit);
 }
 
-bool TilesetEditor::selectMetatile(uint16_t metatileId) {
-    if (!Tileset::metatileIsValid(metatileId, this->primaryTileset, this->secondaryTileset)) return false;
-    this->metatileSelector->select(metatileId);
-    QPoint pos = this->metatileSelector->getMetatileIdCoordsOnWidget(metatileId);
-    this->ui->scrollArea_Metatiles->ensureVisible(pos.x(), pos.y());
-    return true;
-}
-
-void TilesetEditor::setMap(Map *map) {
-    this->metatileSelector->map = map;
-}
-
-void TilesetEditor::setTilesets(QString primaryTilesetLabel, QString secondaryTilesetLabel) {
-    if (this->hasUnsavedChanges) {
-        QMessageBox::StandardButton result = QMessageBox::question(
-            this,
-            "porymap",
-            "Tileset has been modified, save changes?",
-            QMessageBox::No | QMessageBox::Yes,
-            QMessageBox::Yes);
-        if (result == QMessageBox::Yes)
-            this->on_actionSave_Tileset_triggered();
-    }
-    this->hasUnsavedChanges = false;
-    delete this->primaryTileset;
-    delete this->secondaryTileset;
-    Tileset *primaryTileset = project->getTileset(primaryTilesetLabel);
-    Tileset *secondaryTileset = project->getTileset(secondaryTilesetLabel);
-    this->primaryTileset = primaryTileset->copy();
-    this->secondaryTileset = secondaryTileset->copy();
-    this->refresh();
-}
-
-void TilesetEditor::refresh() {
-    this->metatileLayersItem->setTilesets(this->primaryTileset, this->secondaryTileset);
-    this->tileSelector->setTilesets(this->primaryTileset, this->secondaryTileset);
-    this->metatileSelector->setTilesets(this->primaryTileset, this->secondaryTileset);
-    this->metatileSelector->select(this->metatileSelector->getSelectedMetatile());
-    this->drawSelectedTiles();
-
-    this->ui->graphicsView_Tiles->setSceneRect(0, 0, this->tileSelector->pixmap().width() + 2, this->tileSelector->pixmap().height() + 2);
-    this->ui->graphicsView_Tiles->setFixedSize(this->tileSelector->pixmap().width() + 2, this->tileSelector->pixmap().height() + 2);
-    this->ui->graphicsView_Metatiles->setSceneRect(0, 0, this->metatileSelector->pixmap().width() + 2, this->metatileSelector->pixmap().height() + 2);
-    this->ui->graphicsView_Metatiles->setFixedSize(this->metatileSelector->pixmap().width() + 2, this->metatileSelector->pixmap().height() + 2);
-    this->ui->graphicsView_selectedTile->setFixedSize(this->selectedTilePixmapItem->pixmap().width() + 2, this->selectedTilePixmapItem->pixmap().height() + 2);
-}
-
-void TilesetEditor::initMetatileSelector(Map *map)
+void TilesetEditor::initMetatileSelector()
 {
-    this->metatileSelector = new TilesetEditorMetatileSelector(this->primaryTileset, this->secondaryTileset, map);
+    this->metatileSelector = new TilesetEditorMetatileSelector(this->primaryTileset, this->secondaryTileset, this->map);
     connect(this->metatileSelector, SIGNAL(hoveredMetatileChanged(uint16_t)),
             this, SLOT(onHoveredMetatileChanged(uint16_t)));
     connect(this->metatileSelector, SIGNAL(hoveredMetatileCleared()),
@@ -170,6 +170,19 @@ void TilesetEditor::initMetatileSelector(Map *map)
     this->ui->graphicsView_Metatiles->setFixedSize(this->metatileSelector->pixmap().width() + 2, this->metatileSelector->pixmap().height() + 2);
 }
 
+void TilesetEditor::initMetatileLayersItem() {
+    Metatile *metatile = Tileset::getMetatile(this->metatileSelector->getSelectedMetatile(), this->primaryTileset, this->secondaryTileset);
+    this->metatileLayersItem = new MetatileLayersItem(metatile, this->primaryTileset, this->secondaryTileset);
+    connect(this->metatileLayersItem, SIGNAL(tileChanged(int, int)),
+            this, SLOT(onMetatileLayerTileChanged(int, int)));
+    connect(this->metatileLayersItem, SIGNAL(selectedTilesChanged(QPoint, int, int)),
+            this, SLOT(onMetatileLayerSelectionChanged(QPoint, int, int)));
+
+    this->metatileLayersScene = new QGraphicsScene;
+    this->metatileLayersScene->addItem(this->metatileLayersItem);
+    this->ui->graphicsView_metatileLayers->setScene(this->metatileLayersScene);
+}
+
 void TilesetEditor::initTileSelector()
 {
     this->tileSelector = new TilesetEditorTileSelector(this->primaryTileset, this->secondaryTileset, projectConfig.getTripleLayerMetatilesEnabled());
@@ -196,6 +209,40 @@ void TilesetEditor::initSelectedTileItem() {
     this->ui->graphicsView_selectedTile->setFixedSize(this->selectedTilePixmapItem->pixmap().width() + 2, this->selectedTilePixmapItem->pixmap().height() + 2);
 }
 
+void TilesetEditor::restoreWindowState() {
+    logInfo("Restoring tileset editor geometry from previous session.");
+    QMap<QString, QByteArray> geometry = porymapConfig.getTilesetEditorGeometry();
+    this->restoreGeometry(geometry.value("tileset_editor_geometry"));
+    this->restoreState(geometry.value("tileset_editor_state"));
+}
+
+void TilesetEditor::initMetatileHistory() {
+    MetatileHistoryItem *commit = new MetatileHistoryItem(0, nullptr, this->metatile->copy());
+    metatileHistory.push(commit);
+}
+
+void TilesetEditor::reset() {
+    this->hasUnsavedChanges = false;
+    this->setTilesets(this->primaryTileset->name, this->secondaryTileset->name);
+    if (this->paletteEditor)
+        this->paletteEditor->setTilesets(this->primaryTileset, this->secondaryTileset);
+    this->refresh();
+}
+
+void TilesetEditor::refresh() {
+    this->metatileLayersItem->setTilesets(this->primaryTileset, this->secondaryTileset);
+    this->tileSelector->setTilesets(this->primaryTileset, this->secondaryTileset);
+    this->metatileSelector->setTilesets(this->primaryTileset, this->secondaryTileset);
+    this->metatileSelector->select(this->metatileSelector->getSelectedMetatile());
+    this->drawSelectedTiles();
+
+    this->ui->graphicsView_Tiles->setSceneRect(0, 0, this->tileSelector->pixmap().width() + 2, this->tileSelector->pixmap().height() + 2);
+    this->ui->graphicsView_Tiles->setFixedSize(this->tileSelector->pixmap().width() + 2, this->tileSelector->pixmap().height() + 2);
+    this->ui->graphicsView_Metatiles->setSceneRect(0, 0, this->metatileSelector->pixmap().width() + 2, this->metatileSelector->pixmap().height() + 2);
+    this->ui->graphicsView_Metatiles->setFixedSize(this->metatileSelector->pixmap().width() + 2, this->metatileSelector->pixmap().height() + 2);
+    this->ui->graphicsView_selectedTile->setFixedSize(this->selectedTilePixmapItem->pixmap().width() + 2, this->selectedTilePixmapItem->pixmap().height() + 2);
+}
+
 void TilesetEditor::drawSelectedTiles() {
     if (!this->selectedTileScene) {
         return;
@@ -222,19 +269,6 @@ void TilesetEditor::drawSelectedTiles() {
     this->ui->graphicsView_selectedTile->setFixedSize(this->selectedTilePixmapItem->pixmap().width() + 2, this->selectedTilePixmapItem->pixmap().height() + 2);
 }
 
-void TilesetEditor::initMetatileLayersItem() {
-    Metatile *metatile = Tileset::getMetatile(this->metatileSelector->getSelectedMetatile(), this->primaryTileset, this->secondaryTileset);
-    this->metatileLayersItem = new MetatileLayersItem(metatile, this->primaryTileset, this->secondaryTileset);
-    connect(this->metatileLayersItem, SIGNAL(tileChanged(int, int)),
-            this, SLOT(onMetatileLayerTileChanged(int, int)));
-    connect(this->metatileLayersItem, SIGNAL(selectedTilesChanged(QPoint, int, int)),
-            this, SLOT(onMetatileLayerSelectionChanged(QPoint, int, int)));
-
-    this->metatileLayersScene = new QGraphicsScene;
-    this->metatileLayersScene->addItem(this->metatileLayersItem);
-    this->ui->graphicsView_metatileLayers->setScene(this->metatileLayersScene);
-}
-
 void TilesetEditor::onHoveredMetatileChanged(uint16_t metatileId) {
     Metatile *metatile = Tileset::getMetatile(metatileId, this->primaryTileset, this->secondaryTileset);
     QString message;
@@ -599,6 +633,7 @@ void TilesetEditor::closeEvent(QCloseEvent *event)
             this->on_actionSave_Tileset_triggered();
             event->accept();
         } else if (result == QMessageBox::No) {
+            this->reset();
             event->accept();
         } else if (result == QMessageBox::Cancel) {
             event->ignore();
@@ -606,6 +641,14 @@ void TilesetEditor::closeEvent(QCloseEvent *event)
     } else {
         event->accept();
     }
+
+    if (event->isAccepted()) {
+        if (this->paletteEditor) this->paletteEditor->close();
+        porymapConfig.setTilesetEditorGeometry(
+            this->saveGeometry(),
+            this->saveState()
+        );
+    }
 }
 
 void TilesetEditor::on_actionChange_Metatiles_Count_triggered()