diff --git a/android/assets/jsons/Buildings.json b/android/assets/jsons/Buildings.json
index 27d649a694..0846c25907 100644
--- a/android/assets/jsons/Buildings.json
+++ b/android/assets/jsons/Buildings.json
@@ -174,6 +174,7 @@
 		maintainance:2,
 		percentStatBonus:{science:33},
 		requiredBuilding:"Library",
+		unique:"JunglesProvideScience",
 		requiredTech:"Metal Casting"
 	},
 	{
@@ -194,6 +195,99 @@
 		isWonder:true,
 		unique:"NewTileCostReduction",
 		requiredTech:"Education"
-	}
+	},
+	{
+		name:"Ironworks",
+		description: "",
+		production:8,
+		culture:1,
+		isWonder:true,
+		requiredBuildingInAllCities:"Workshop",
+		requiredTech:"Machinery"
+	},
+	{
+		name:"Observatory",
+		description: "City must be bordering a mountain", 
+		maintainance:2,
+		percentStatBonus:{science:50},
+		requiredBuilding:"Library",
+		requiredTech:"Metal Casting"
+	}, 
+	{
+		name:"Opera House",
+		description: "",
+		culture:4,
+		requiredBuilding:"Temple",
+		maintainance:2,
+		requiredTech:"Acoustics"
+	},
+	{
+		name:"Sistine Chapel",
+		description: "Culture in all cities increased by 25%",
+		culture:1,
+		isWonder:true,
+		unique:"CultureIncrease",
+		requiredTech:"Acoustics"
+	},
+	{
+		name:"Bank",
+		description: "",
+		gold:2,
+		percentStatBonus:{gold:25},
+		requiredBuilding:"Market",
+		requiredTech:"Banking"
+	},
+	{
+		name:"Theatre",
+		description: "",
+		happiness:3,
+		maintainance:2,
+		requiredBuilding:"Colloseum",
+		requiredTech:"Banking"
+	},
+	{
+		name:"Taj Mahal",
+		description: "Empire enters a golden age",
+		culture:1,
+		happiness:4,
+		isWonder:true,
+		unique:"EmpireEntersGoldenAge",
+		requiredTech:"Acoustics"
+	},
+	{
+		name:"Windmill",
+		description: "",
+		production:2,
+		maintainance:2,
+		percentStatBonus:{production:10},
+		requiredTech:"Economics"
+	}, 
+	{
+		name:"Museum",
+		description: "",
+		culture:5,
+		requiredBuilding:"Opera House",
+		maintainance:3,
+		requiredTech:"Archaeology"
+	},
+	{
+		name:"Hermitage",
+		description: "",
+		percentStatBonus:{culture:50},
+		culture:5,
+		isWonder:true,
+		requiredBuildingInAllCities:"Opera House",
+		requiredTech:"Archaeology"
+	},
+	{
+		name:"The Louvre",
+		description: "Free Great Artist appears near the city - TODO",
+		culture:1,
+		happiness:4,
+		isWonder:true,
+		unique:"FreeGreatArtistAppears",
+		requiredTech:"Archaeology"
+	},
+	
 	
 ]
\ No newline at end of file
diff --git a/android/assets/jsons/Techs.json b/android/assets/jsons/Techs.json
index f0d2175784..958f99e2b5 100644
--- a/android/assets/jsons/Techs.json
+++ b/android/assets/jsons/Techs.json
@@ -32,7 +32,7 @@
 				name:"Sailing",
 				row:1,
 				prerequisites:["Pottery"],
-				description:"Allows access to sea resources by building work boats"
+				description:"Does nothing since we have no sea tiles - In theory, Allows access to sea resources by building work boats"
 			},
 			{
 				name:"Calendar",
@@ -83,7 +83,7 @@
 				cost:95,
 				row:1,
 				prerequisites:["Sailing"],
-				description:"Allows construction of lighthouses, providing more food for sea tiles"
+				description:"Does nothing since we have no sea tiles - In theory, Allows construction of lighthouses, providing more food for sea tiles"
 			},
 			{
 				name:"Philosophy",
@@ -127,7 +127,7 @@
 				name:"Theology",
 				row:2,
 				prerequisites:["Calendar","Philosophy"],
-				description:"???"
+				description:"Unclear what this does in Vanilla civ"
 			},
 			{
 				name:"Civil Service",
@@ -166,7 +166,7 @@
 				row:1,
 				cost:415,
 				prerequisites:["Optics"],
-				description:"???"
+				description:"Does nothing since we have no sea tiles - In theory, allows construction of harbors"
 			},
 			{
 				name:"Education",
@@ -184,19 +184,19 @@
 				name:"Machinery",
 				row:8,
 				prerequisites:["Engineering"],
-				description:"???"
+				description:"Speeds movement speed on roads and allows you to construct the Ironworks wonder, which gives a massive boost in production"
 			},
 			{
 				name:"Physics",
 				row:9,
 				prerequisites:["Engineering","Metal Casting"],
-				description:"???"
+				description:"Contributes only war-relatied things - on hold until AI is introduced"
 			},
 			{
 				name:"Steel",
 				row:10,
 				prerequisites:["Metal Casting"],
-				description:"???"
+				description:"Contributes only war-relatied things - on hold until AI is introduced"
 			}
 		]
 	},
@@ -210,31 +210,31 @@
 				name:"Astronomy",
 				row:2,
 				prerequisites:["Compass","Education"],
-				description:"This is a lie, change!!!"
+				description:"Enables construction of Observatories in cities near mountains"
 			},
 			{
 				name:"Acoustics",
 				row:4,
 				prerequisites:["Education","Chivalry"],
-				description:"This is a lie, change!!!"
+				description:"Enables construction of Opera Houses and the Sistine Chapel, providing culture"
 			},
 			{
 				name:"Banking",
 				row:6,
 				prerequisites:["Chivalry"],
-				description:"This is a lie, change!!!"
+				description:"Enables construction of banks, giving a serious boost in gold to your empire"
 			},
 			{
 				name:"Printing Press",
 				row:8,
 				prerequisites:["Machinery","Physics"],
-				description:"This is a lie, change!!!"
+				description:"Eables construction of the Theatre and Taj Mahal, increasing happiness"
 			},
 			{
 				name:"Gunpowder",
 				row:10,
 				prerequisites:["Physics","Steel"],
-				description:"This is a lie, change!!!"
+				description:"Contributes only war-relatied things - on hold until AI is introduced"
 			}
 		]	
 	},
@@ -248,25 +248,25 @@
 				name:"Navigation",
 				row:2,
 				prerequisites:["Astronomy"],
-				description:"This is a lie, change!!!"
+				description:"Does nothing since we have no sea tiles - In theory, allows construction of Frigates and Seaports"
 			},
 			{
 				name:"Economics",
 				row:6,
 				prerequisites:["Banking","Printing Press"],
-				description:"This is a lie, change!!!"
+				description:"Camps and Trading Posts provide +1 gold, allows construction of Windmill"
 			},
 			{
 				name:"Chemistry",
 				row:9,
 				prerequisites:["Gunpowder"],
-				description:"This is a lie, change!!!"
+				description:"Mines and Quarries provide +1 production"
 			},
 			{
 				name:"Metallurgy",
 				row:10,
 				prerequisites:["Gunpowder"],
-				description:"This is a lie, change!!!"
+				description:"Contributes only war-relatied things - on hold until AI is introduced"
 			}
 		]	
 	},
@@ -277,10 +277,10 @@
 		wonderCost:750,
 		techs:[
 			{
-				name:"Archaology",
+				name:"Archaeology",
 				row:2,
 				prerequisites:["Navigation"],
-				description:"This is a lie, change!!!"
+				description:"Allows construction of Museums and the Hermitage and Louvre wonders, providing culture"
 			},
 			{
 				name:"Scientific Theory",
@@ -292,19 +292,71 @@
 				name:"Military Science",
 				row:6,
 				prerequisites:["Economics","Chemistry"],
-				description:"This is a lie, change!!!"
+				description:"Contributes only war-relatied things - on hold until AI is introduced"
 			},
 			{
 				name:"Fertilizer",
 				row:9,
 				prerequisites:["Chemistry"],
-				description:"This is a lie, change!!!"
+				description:"+1 food from Farms, Plantations and Pastures"
 			},
 			{
 				name:"Rifling",
 				row:10,
 				prerequisites:["Metallurgy"],
-				description:"This is a lie, change!!!"
+				description:"Contributes only war-relatied things - on hold until AI is introduced"
+			}
+		]	
+	},
+	{
+		columnNumber: 9,
+		techCost: 2585,
+		buildingCost:360,
+		wonderCost:920,
+		techs:[
+			{
+				name:"Biology",
+				row:4,
+				prerequisites:["Archaeology","Scientific Theory"],
+				description:"Reveals oil and allows construction of oil wells - Todo"
+			},
+			{
+				name:"Steam Power",
+				row:6,
+				prerequisites:["Scientific Theory","Military Science"],
+				description:"Enables construction of factories and  - Todo"
+			},
+			{
+				name:"Dynamite",
+				row:9,
+				prerequisites:["Military Science","Fertilizer","Rifling"],
+				description:"Contributes only war-relatied things - on hold until AI is introduced"
+			}
+		]	
+	},
+	{
+		columnNumber: 10,
+		techCost: 3405,
+		buildingCost:500,
+		wonderCost:1060,
+		techs:[
+			{
+				name:"Electricity",
+				row:4,
+				prerequisites:["Biology","Steam Power"],
+				description:"Reveals Aluminium on map and allows construction of stock exchange, providing gold - todo"
+			},
+			{
+				name:"Replaceable Parts",
+				row:6,
+				prerequisites:["Steam Power"],
+				description:"Contributes only war-relatied things - on hold until AI is introduced - todo"
+			},
+			{
+				name:"Railroad",
+				row:8,
+				prerequisites:["Steam Power","Dynamite"],
+				description:"Allows construction of railroads, providing fast transport and a 25% production boost to cities - todo"
 			}
 		]	
 	}
diff --git a/android/assets/jsons/Terrains.json b/android/assets/jsons/Terrains.json
index 5ff09b6e31..a6a7a92584 100644
--- a/android/assets/jsons/Terrains.json
+++ b/android/assets/jsons/Terrains.json
@@ -52,8 +52,7 @@
 		movementCost:2,
 		overrideStats:true,
 		unbuildable:true,
-		occursOn:["Tundra","Plains","Grassland"],
-		removalTech: "Mining"
+		occursOn:["Tundra","Plains","Grassland"]
 	},
 	{
 		name:"Jungle",
@@ -62,8 +61,7 @@
 		movementCost:2,
 		overrideStats:true,
 		unbuildable:true,
-		occursOn:["Plains","Grassland"],
-		removalTech: "Bronze Working"
+		occursOn:["Plains","Grassland"]
 	},
 	{
 		name:"Marsh",
@@ -71,8 +69,7 @@
 		food:-1,
 		movementCost:2,
 		unbuildable:true,
-		occursOn:["Grassland"],
-		removalTech: "Masonry"
+		occursOn:["Grassland"]
 	},
 	{
 		name:"Oasis",
diff --git a/android/assets/jsons/TileImprovements.json b/android/assets/jsons/TileImprovements.json
index b841df2e03..af43817807 100644
--- a/android/assets/jsons/TileImprovements.json
+++ b/android/assets/jsons/TileImprovements.json
@@ -43,7 +43,8 @@
 	},
 	{
 		name:"Oil well",
-		turnsToBuild:6
+		turnsToBuild:6,
+		techRequired:"Biology",
 	},
 	{
 		name:"Pasture",
@@ -76,5 +77,24 @@
 		name:"Railroad",
 		turnsToBuild:12,
 		techRequired:"Railroad"
-	}
+	},
+	
+	{
+		name:"Remove Forest",
+		turnsToBuild:6,
+		terrainsCanBeBuiltOn:["Forest"],
+		techRequired:"Mining"
+	},
+	{
+		name:"Remove Jungle",
+		turnsToBuild:6,
+		terrainsCanBeBuiltOn:["Jungle"],
+		techRequired:"Bronze Working"
+	},
+	{
+		name:"Remove Marsh",
+		turnsToBuild:6,
+		terrainsCanBeBuiltOn:["Marsh"],
+		techRequired:"Masonry"
+	},
 ]
\ No newline at end of file
diff --git a/core/src/com/unciv/civinfo/TileInfo.java b/core/src/com/unciv/civinfo/TileInfo.java
index d7501e3154..2359559329 100644
--- a/core/src/com/unciv/civinfo/TileInfo.java
+++ b/core/src/com/unciv/civinfo/TileInfo.java
@@ -105,10 +105,10 @@ public class TileInfo
         return resource != null && getTileResource().improvement.equals(improvement.name);
     }
 
-    public void startWorkingOnImprovement(TileImprovement improvement)
+    public void startWorkingOnImprovement(String improvementName,int turnsToBuild)
     {
-        improvementInProgress = improvement.name;
-        turnsToImprovement = improvement.turnsToBuild;
+        improvementInProgress = improvementName;
+        turnsToImprovement = turnsToBuild;
     }
 
     public void stopWorkingOnImprovement()
diff --git a/core/src/com/unciv/game/ImageGetter.java b/core/src/com/unciv/game/ImageGetter.java
index 372069301d..d9290e0747 100644
--- a/core/src/com/unciv/game/ImageGetter.java
+++ b/core/src/com/unciv/game/ImageGetter.java
@@ -8,7 +8,7 @@ import com.badlogic.gdx.scenes.scene2d.ui.Image;
 import java.util.HashMap;
 
 public class ImageGetter {
-        static HashMap<String, TextureRegion> textureRegionByFileName = new HashMap<String, TextureRegion>();
+        public static HashMap<String, TextureRegion> textureRegionByFileName = new HashMap<String, TextureRegion>();
 
         public static Image getImageByFilename(String fileName) {
                 if (!textureRegionByFileName.containsKey(fileName))
diff --git a/core/src/com/unciv/game/TileGroup.java b/core/src/com/unciv/game/TileGroup.java
index 13cfb7a5b1..9dcee9bc77 100644
--- a/core/src/com/unciv/game/TileGroup.java
+++ b/core/src/com/unciv/game/TileGroup.java
@@ -6,6 +6,8 @@ import com.badlogic.gdx.scenes.scene2d.Group;
 import com.badlogic.gdx.scenes.scene2d.ui.Container;
 import com.badlogic.gdx.scenes.scene2d.ui.Image;
 import com.badlogic.gdx.scenes.scene2d.ui.TextButton;
+import com.badlogic.gdx.scenes.scene2d.utils.Drawable;
+import com.badlogic.gdx.scenes.scene2d.utils.TextureRegionDrawable;
 import com.unciv.civinfo.CivilizationInfo;
 import com.unciv.civinfo.RoadStatus;
 import com.unciv.civinfo.TileInfo;
@@ -48,6 +50,9 @@ public class TileGroup extends Group {
 
     void update() {
 
+        String terrainFileName ="TerrainIcons/" + tileInfo.getLastTerrain().name.replace(' ','_') + "_(Civ5).png";
+        terrainImage.setDrawable(new TextureRegionDrawable(ImageGetter.textureRegionByFileName.get(terrainFileName))); // In case we e.g. removed a jungle
+
         if (tileInfo.hasViewableResource() && resourceImage == null) { // Need to add the resource image!
             String fileName = "ResourceIcons/" + tileInfo.resource + "_(Civ5).png";
             Image image = ImageGetter.getImageByFilename(fileName);
diff --git a/core/src/com/unciv/game/UnCivGame.java b/core/src/com/unciv/game/UnCivGame.java
index 7d2b756b87..047d995631 100644
--- a/core/src/com/unciv/game/UnCivGame.java
+++ b/core/src/com/unciv/game/UnCivGame.java
@@ -82,8 +82,8 @@ public class UnCivGame extends Game {
                 GameBasics.Technologies.put(tech.name,tech);
             }
         }
-        for(Building building : GameBasics.Buildings.values()){
-            if(building.requiredTech == null) continue;
+        for(Building building : GameBasics.Buildings.values()) {
+            if (building.requiredTech == null) continue;
             TechColumn column = building.GetRequiredTech().column;
             building.cost = building.isWonder ? column.wonderCost : column.buildingCost;
         }
diff --git a/core/src/com/unciv/game/WorldScreen.java b/core/src/com/unciv/game/WorldScreen.java
index d06337ecef..1501f1d624 100644
--- a/core/src/com/unciv/game/WorldScreen.java
+++ b/core/src/com/unciv/game/WorldScreen.java
@@ -180,12 +180,12 @@ public class WorldScreen extends CameraStageBaseScreen {
 
         CivStats nextTurnStats = game.civInfo.getStatsForNextTurn();
 
-        CivTable.add(new Label("gold: " + Math.round(currentStats.gold)
+        CivTable.add(new Label("Gold: " + Math.round(currentStats.gold)
                 + "(" +(nextTurnStats.gold >0?"+":"") + Math.round(nextTurnStats.gold) +")", skin));
 
-        CivTable.add(new Label("science: +" + Math.round(nextTurnStats.science), skin));
-        CivTable.add(new Label("happiness: " + Math.round(nextTurnStats.happiness), skin));
-        CivTable.add(new Label("culture: " + Math.round(currentStats.culture) + "(+" + Math.round(nextTurnStats.culture) +")", skin));
+        CivTable.add(new Label("Science: +" + Math.round(nextTurnStats.science), skin));
+        CivTable.add(new Label("Happiness: " + Math.round(nextTurnStats.happiness), skin));
+        CivTable.add(new Label("Culture: " + Math.round(currentStats.culture) + "(+" + Math.round(nextTurnStats.culture) +")", skin));
 
         CivTable.pack();
 
diff --git a/core/src/com/unciv/game/pickerscreens/ImprovementPickerScreen.java b/core/src/com/unciv/game/pickerscreens/ImprovementPickerScreen.java
index 8b049a08b0..d3dfcba40b 100644
--- a/core/src/com/unciv/game/pickerscreens/ImprovementPickerScreen.java
+++ b/core/src/com/unciv/game/pickerscreens/ImprovementPickerScreen.java
@@ -6,12 +6,14 @@ import com.badlogic.gdx.scenes.scene2d.Touchable;
 import com.badlogic.gdx.scenes.scene2d.ui.TextButton;
 import com.badlogic.gdx.scenes.scene2d.ui.VerticalGroup;
 import com.badlogic.gdx.scenes.scene2d.utils.ClickListener;
+import com.unciv.civinfo.CivilizationInfo;
 import com.unciv.game.UnCivGame;
 import com.unciv.models.gamebasics.GameBasics;
 import com.unciv.models.gamebasics.TileImprovement;
 
 public class ImprovementPickerScreen extends PickerScreen {
-    TileImprovement SelectedImprovement;
+    String SelectedImprovement;
+    int TurnsToImprovement;
 
     public ImprovementPickerScreen(final UnCivGame game, final com.unciv.civinfo.TileInfo tileInfo) {
         super(game);
@@ -21,7 +23,7 @@ public class ImprovementPickerScreen extends PickerScreen {
         rightSideButton.addListener(new ClickListener(){
             @Override
             public void clicked(InputEvent event, float x, float y) {
-                tileInfo.startWorkingOnImprovement(SelectedImprovement);
+                tileInfo.startWorkingOnImprovement(SelectedImprovement, TurnsToImprovement);
                 game.setWorldScreen();
                 dispose();
             }
@@ -38,9 +40,10 @@ public class ImprovementPickerScreen extends PickerScreen {
             TB.addListener(new ClickListener(){
                 @Override
                 public void clicked(InputEvent event, float x, float y) {
-                    SelectedImprovement = improvement;
+                    SelectedImprovement = improvement.name;
+                    TurnsToImprovement = improvement.turnsToBuild;
                     rightSideButton.setTouchable(Touchable.enabled);
-                    rightSideButton.setText("Construct "+improvement.name);
+                    rightSideButton.setText(improvement.name);
                     rightSideButton.setColor(Color.WHITE);
                     descriptionLabel.setText(improvement.getDescription());
                 }
diff --git a/core/src/com/unciv/game/pickerscreens/TechPickerScreen.java b/core/src/com/unciv/game/pickerscreens/TechPickerScreen.java
index e1ff9f0dec..181113f45e 100644
--- a/core/src/com/unciv/game/pickerscreens/TechPickerScreen.java
+++ b/core/src/com/unciv/game/pickerscreens/TechPickerScreen.java
@@ -100,14 +100,14 @@ public class TechPickerScreen extends PickerScreen {
         }
 
         for (Technology technology : GameBasics.Technologies.linqValues()) {
-            techMatrix[technology.column.columnNumber][technology.row - 1] = technology;
+            techMatrix[technology.column.columnNumber-1][technology.row - 1] = technology;
         }
 
 //        Table topTable = new Table();
         for (int i = 0; i < 10; i++) {
             topTable.row().pad(5);
 
-            for (int j = 0; j < 8; j++) {
+            for (int j = 0; j < 9; j++) {
                 final Technology tech = techMatrix[j][i];
                 if (tech == null) topTable.add(); // empty cell
                 else {