diff --git a/world_maker/data/building.png b/world_maker/data/building.png
index dcbcdab..9dc311c 100644
Binary files a/world_maker/data/building.png and b/world_maker/data/building.png differ
diff --git a/world_maker/data/city_map.png b/world_maker/data/city_map.png
new file mode 100644
index 0000000..1a5949c
Binary files /dev/null and b/world_maker/data/city_map.png differ
diff --git a/world_maker/data/district.png b/world_maker/data/district.png
index f6df0f7..96b3d4f 100644
Binary files a/world_maker/data/district.png and b/world_maker/data/district.png differ
diff --git a/world_maker/data/mountain_map.png b/world_maker/data/mountain_map.png
index 47746e8..082c138 100644
Binary files a/world_maker/data/mountain_map.png and b/world_maker/data/mountain_map.png differ
diff --git a/world_maker/data/roadmap.png b/world_maker/data/roadmap.png
index 4375229..3c976c0 100644
Binary files a/world_maker/data/roadmap.png and b/world_maker/data/roadmap.png differ
diff --git a/world_maker/data/skeleton_highway.png b/world_maker/data/skeleton_highway.png
index cee9fe4..221a5d9 100644
Binary files a/world_maker/data/skeleton_highway.png and b/world_maker/data/skeleton_highway.png differ
diff --git a/world_maker/data/skeleton_mountain.png b/world_maker/data/skeleton_mountain.png
index 8c170dd..050fff0 100644
Binary files a/world_maker/data/skeleton_mountain.png and b/world_maker/data/skeleton_mountain.png differ
diff --git a/world_maker/data/skeleton_mountain_area.png b/world_maker/data/skeleton_mountain_area.png
index 3f54167..af563e2 100644
Binary files a/world_maker/data/skeleton_mountain_area.png and b/world_maker/data/skeleton_mountain_area.png differ
diff --git a/world_maker/data_analysis.py b/world_maker/data_analysis.py
index 717b335..6386d74 100644
--- a/world_maker/data_analysis.py
+++ b/world_maker/data_analysis.py
@@ -234,7 +234,7 @@ def skeleton_mountain_map(image: Union[str, Image] = './world_maker/data/mountai
     skeleton.parse_graph()
     heightmap_skeleton = skeleton.map()
     heightmap_skeleton.save('./world_maker/data/skeleton_mountain.png')
-    skeleton.road_area('skeleton_mountain_area.png',3)
+    skeleton.road_area('skeleton_mountain_area.png', 3)
     return skeleton
 
 
@@ -275,18 +275,18 @@ def detect_mountain(image: Union[str, Image] = './world_maker/data/sobelmap.png'
     return (cX, cY)
 
 
-def rectangle_2D_to_3D(rectangle: list[tuple[tuple[int, int],tuple[int, int]]],
-                       height_min:int = 6, height_max:int = 10) \
+def rectangle_2D_to_3D(rectangle: list[tuple[tuple[int, int], tuple[int, int]]],
+                       height_min: int = 6, height_max: int = 10) \
         -> list[tuple[tuple[int, int, int], tuple[int, int, int]]]:
-    image = handle_import_image('./world_maker/data/heightmap.png')
+    image = handle_import_image('./world_maker/data/heightmap.png').convert('L')
     new_rectangle = []
     for rect in rectangle:
         start, end = rect
         avg_height = 0
         for x in range(start[0], end[0]):
             for y in range(start[1], end[1]):
-                avg_height += np.array(image.getpixel((x, y)))
+                avg_height += image.getpixel((x, y))
         avg_height = int(avg_height / ((end[0] - start[0]) * (end[1] - start[1])))
-        new_rectangle.append(((start[0], avg_height, start[1]), (end[0], avg_height + randint(height_min, height_max), end[1])))
+        new_rectangle.append(
+            ((start[0], avg_height, start[1]), (end[0], avg_height + randint(height_min, height_max), end[1])))
     return new_rectangle
-