diff --git a/graphics/pokenav/city_maps/dewford_0.bin b/graphics/pokenav/region_map/city_maps/dewford_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/dewford_0.bin
rename to graphics/pokenav/region_map/city_maps/dewford_0.bin
diff --git a/graphics/pokenav/city_maps/ever_grande_0.bin b/graphics/pokenav/region_map/city_maps/ever_grande_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/ever_grande_0.bin
rename to graphics/pokenav/region_map/city_maps/ever_grande_0.bin
diff --git a/graphics/pokenav/city_maps/ever_grande_1.bin b/graphics/pokenav/region_map/city_maps/ever_grande_1.bin
similarity index 100%
rename from graphics/pokenav/city_maps/ever_grande_1.bin
rename to graphics/pokenav/region_map/city_maps/ever_grande_1.bin
diff --git a/graphics/pokenav/city_maps/fallarbor_0.bin b/graphics/pokenav/region_map/city_maps/fallarbor_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/fallarbor_0.bin
rename to graphics/pokenav/region_map/city_maps/fallarbor_0.bin
diff --git a/graphics/pokenav/city_maps/fortree_0.bin b/graphics/pokenav/region_map/city_maps/fortree_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/fortree_0.bin
rename to graphics/pokenav/region_map/city_maps/fortree_0.bin
diff --git a/graphics/pokenav/city_maps/lavaridge_0.bin b/graphics/pokenav/region_map/city_maps/lavaridge_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/lavaridge_0.bin
rename to graphics/pokenav/region_map/city_maps/lavaridge_0.bin
diff --git a/graphics/pokenav/city_maps/lilycove_0.bin b/graphics/pokenav/region_map/city_maps/lilycove_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/lilycove_0.bin
rename to graphics/pokenav/region_map/city_maps/lilycove_0.bin
diff --git a/graphics/pokenav/city_maps/lilycove_1.bin b/graphics/pokenav/region_map/city_maps/lilycove_1.bin
similarity index 100%
rename from graphics/pokenav/city_maps/lilycove_1.bin
rename to graphics/pokenav/region_map/city_maps/lilycove_1.bin
diff --git a/graphics/pokenav/city_maps/littleroot_0.bin b/graphics/pokenav/region_map/city_maps/littleroot_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/littleroot_0.bin
rename to graphics/pokenav/region_map/city_maps/littleroot_0.bin
diff --git a/graphics/pokenav/city_maps/mauville_0.bin b/graphics/pokenav/region_map/city_maps/mauville_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/mauville_0.bin
rename to graphics/pokenav/region_map/city_maps/mauville_0.bin
diff --git a/graphics/pokenav/city_maps/mauville_1.bin b/graphics/pokenav/region_map/city_maps/mauville_1.bin
similarity index 100%
rename from graphics/pokenav/city_maps/mauville_1.bin
rename to graphics/pokenav/region_map/city_maps/mauville_1.bin
diff --git a/graphics/pokenav/city_maps/mossdeep_0.bin b/graphics/pokenav/region_map/city_maps/mossdeep_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/mossdeep_0.bin
rename to graphics/pokenav/region_map/city_maps/mossdeep_0.bin
diff --git a/graphics/pokenav/city_maps/mossdeep_1.bin b/graphics/pokenav/region_map/city_maps/mossdeep_1.bin
similarity index 100%
rename from graphics/pokenav/city_maps/mossdeep_1.bin
rename to graphics/pokenav/region_map/city_maps/mossdeep_1.bin
diff --git a/graphics/pokenav/city_maps/oldale_0.bin b/graphics/pokenav/region_map/city_maps/oldale_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/oldale_0.bin
rename to graphics/pokenav/region_map/city_maps/oldale_0.bin
diff --git a/graphics/pokenav/city_maps/pacifidlog_0.bin b/graphics/pokenav/region_map/city_maps/pacifidlog_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/pacifidlog_0.bin
rename to graphics/pokenav/region_map/city_maps/pacifidlog_0.bin
diff --git a/graphics/pokenav/city_maps/petalburg_0.bin b/graphics/pokenav/region_map/city_maps/petalburg_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/petalburg_0.bin
rename to graphics/pokenav/region_map/city_maps/petalburg_0.bin
diff --git a/graphics/pokenav/city_maps/rustboro_0.bin b/graphics/pokenav/region_map/city_maps/rustboro_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/rustboro_0.bin
rename to graphics/pokenav/region_map/city_maps/rustboro_0.bin
diff --git a/graphics/pokenav/city_maps/rustboro_1.bin b/graphics/pokenav/region_map/city_maps/rustboro_1.bin
similarity index 100%
rename from graphics/pokenav/city_maps/rustboro_1.bin
rename to graphics/pokenav/region_map/city_maps/rustboro_1.bin
diff --git a/graphics/pokenav/city_maps/slateport_0.bin b/graphics/pokenav/region_map/city_maps/slateport_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/slateport_0.bin
rename to graphics/pokenav/region_map/city_maps/slateport_0.bin
diff --git a/graphics/pokenav/city_maps/slateport_1.bin b/graphics/pokenav/region_map/city_maps/slateport_1.bin
similarity index 100%
rename from graphics/pokenav/city_maps/slateport_1.bin
rename to graphics/pokenav/region_map/city_maps/slateport_1.bin
diff --git a/graphics/pokenav/city_maps/sootopolis_0.bin b/graphics/pokenav/region_map/city_maps/sootopolis_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/sootopolis_0.bin
rename to graphics/pokenav/region_map/city_maps/sootopolis_0.bin
diff --git a/graphics/pokenav/city_maps/verdanturf_0.bin b/graphics/pokenav/region_map/city_maps/verdanturf_0.bin
similarity index 100%
rename from graphics/pokenav/city_maps/verdanturf_0.bin
rename to graphics/pokenav/region_map/city_maps/verdanturf_0.bin
diff --git a/graphics/pokenav/city_zoom_text.png b/graphics/pokenav/region_map/city_zoom_text.png
similarity index 100%
rename from graphics/pokenav/city_zoom_text.png
rename to graphics/pokenav/region_map/city_zoom_text.png
diff --git a/graphics/pokenav/region_map_map.bin b/graphics/pokenav/region_map/map.bin
similarity index 100%
rename from graphics/pokenav/region_map_map.bin
rename to graphics/pokenav/region_map/map.bin
diff --git a/graphics/pokenav/region_map.pal b/graphics/pokenav/region_map/map.pal
similarity index 100%
rename from graphics/pokenav/region_map.pal
rename to graphics/pokenav/region_map/map.pal
diff --git a/graphics/pokenav/region_map.png b/graphics/pokenav/region_map/map.png
similarity index 100%
rename from graphics/pokenav/region_map.png
rename to graphics/pokenav/region_map/map.png
diff --git a/graphics/pokenav/zoom_tiles.png b/graphics/pokenav/region_map/zoom_tiles.png
similarity index 100%
rename from graphics/pokenav/zoom_tiles.png
rename to graphics/pokenav/region_map/zoom_tiles.png
diff --git a/graphics/pokenav/region_map_section_layout.bin b/graphics/pokenav/region_map_section_layout.bin
deleted file mode 100644
index 4700e08b6..000000000
Binary files a/graphics/pokenav/region_map_section_layout.bin and /dev/null differ
diff --git a/graphics_file_rules.mk b/graphics_file_rules.mk
index 6f4d1e422..56acaf659 100644
--- a/graphics_file_rules.mk
+++ b/graphics_file_rules.mk
@@ -337,7 +337,7 @@ graphics/title_screen/pokemon_logo.gbapal: %.gbapal: %.pal
 graphics/pokemon_jump/bg.4bpp: %.4bpp: %.png
 	$(GFX) $< $@ -num_tiles 63 -Wnum_tiles
 
-graphics/pokenav/region_map.8bpp: %.8bpp: %.png
+graphics/pokenav/region_map/map.8bpp: %.8bpp: %.png
 	$(GFX) $< $@ -num_tiles 233 -Wnum_tiles
 
 $(MISCGFXDIR)/japanese_hof.4bpp: %.4bpp: %.png
diff --git a/src/data/region_map/city_map_tilemaps.h b/src/data/region_map/city_map_tilemaps.h
index fed158935..11a48c15d 100644
--- a/src/data/region_map/city_map_tilemaps.h
+++ b/src/data/region_map/city_map_tilemaps.h
@@ -1,22 +1,22 @@
-const u32 gPokenavCityMap_Lavaridge_0[] = INCBIN_U32("graphics/pokenav/city_maps/lavaridge_0.bin.lz");
-const u32 gPokenavCityMap_Fallarbor_0[] = INCBIN_U32("graphics/pokenav/city_maps/fallarbor_0.bin.lz");
-const u32 gPokenavCityMap_Fortree_0[] = INCBIN_U32("graphics/pokenav/city_maps/fortree_0.bin.lz");
-const u32 gPokenavCityMap_Slateport_0[] = INCBIN_U32("graphics/pokenav/city_maps/slateport_0.bin.lz");
-const u32 gPokenavCityMap_Slateport_1[] = INCBIN_U32("graphics/pokenav/city_maps/slateport_1.bin.lz");
-const u32 gPokenavCityMap_Rustboro_0[] = INCBIN_U32("graphics/pokenav/city_maps/rustboro_0.bin.lz");
-const u32 gPokenavCityMap_Rustboro_1[] = INCBIN_U32("graphics/pokenav/city_maps/rustboro_1.bin.lz");
-const u32 gPokenavCityMap_Pacifidlog_0[] = INCBIN_U32("graphics/pokenav/city_maps/pacifidlog_0.bin.lz");
-const u32 gPokenavCityMap_Mauville_1[] = INCBIN_U32("graphics/pokenav/city_maps/mauville_1.bin.lz");
-const u32 gPokenavCityMap_Mauville_0[] = INCBIN_U32("graphics/pokenav/city_maps/mauville_0.bin.lz");
-const u32 gPokenavCityMap_Oldale_0[] = INCBIN_U32("graphics/pokenav/city_maps/oldale_0.bin.lz");
-const u32 gPokenavCityMap_Lilycove_1[] = INCBIN_U32("graphics/pokenav/city_maps/lilycove_1.bin.lz");
-const u32 gPokenavCityMap_Lilycove_0[] = INCBIN_U32("graphics/pokenav/city_maps/lilycove_0.bin.lz");
-const u32 gPokenavCityMap_Littleroot_0[] = INCBIN_U32("graphics/pokenav/city_maps/littleroot_0.bin.lz");
-const u32 gPokenavCityMap_Dewford_0[] = INCBIN_U32("graphics/pokenav/city_maps/dewford_0.bin.lz");
-const u32 gPokenavCityMap_Sootopolis_0[] = INCBIN_U32("graphics/pokenav/city_maps/sootopolis_0.bin.lz");
-const u32 gPokenavCityMap_EverGrande_0[] = INCBIN_U32("graphics/pokenav/city_maps/ever_grande_0.bin.lz");
-const u32 gPokenavCityMap_EverGrande_1[] = INCBIN_U32("graphics/pokenav/city_maps/ever_grande_1.bin.lz");
-const u32 gPokenavCityMap_Verdanturf_0[] = INCBIN_U32("graphics/pokenav/city_maps/verdanturf_0.bin.lz");
-const u32 gPokenavCityMap_Mossdeep_1[] = INCBIN_U32("graphics/pokenav/city_maps/mossdeep_1.bin.lz");
-const u32 gPokenavCityMap_Mossdeep_0[] = INCBIN_U32("graphics/pokenav/city_maps/mossdeep_0.bin.lz");
-const u32 gPokenavCityMap_Petalburg_0[] = INCBIN_U32("graphics/pokenav/city_maps/petalburg_0.bin.lz");
+const u32 gPokenavCityMap_Lavaridge_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/lavaridge_0.bin.lz");
+const u32 gPokenavCityMap_Fallarbor_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/fallarbor_0.bin.lz");
+const u32 gPokenavCityMap_Fortree_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/fortree_0.bin.lz");
+const u32 gPokenavCityMap_Slateport_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/slateport_0.bin.lz");
+const u32 gPokenavCityMap_Slateport_1[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/slateport_1.bin.lz");
+const u32 gPokenavCityMap_Rustboro_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/rustboro_0.bin.lz");
+const u32 gPokenavCityMap_Rustboro_1[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/rustboro_1.bin.lz");
+const u32 gPokenavCityMap_Pacifidlog_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/pacifidlog_0.bin.lz");
+const u32 gPokenavCityMap_Mauville_1[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/mauville_1.bin.lz");
+const u32 gPokenavCityMap_Mauville_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/mauville_0.bin.lz");
+const u32 gPokenavCityMap_Oldale_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/oldale_0.bin.lz");
+const u32 gPokenavCityMap_Lilycove_1[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/lilycove_1.bin.lz");
+const u32 gPokenavCityMap_Lilycove_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/lilycove_0.bin.lz");
+const u32 gPokenavCityMap_Littleroot_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/littleroot_0.bin.lz");
+const u32 gPokenavCityMap_Dewford_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/dewford_0.bin.lz");
+const u32 gPokenavCityMap_Sootopolis_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/sootopolis_0.bin.lz");
+const u32 gPokenavCityMap_EverGrande_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/ever_grande_0.bin.lz");
+const u32 gPokenavCityMap_EverGrande_1[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/ever_grande_1.bin.lz");
+const u32 gPokenavCityMap_Verdanturf_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/verdanturf_0.bin.lz");
+const u32 gPokenavCityMap_Mossdeep_1[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/mossdeep_1.bin.lz");
+const u32 gPokenavCityMap_Mossdeep_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/mossdeep_0.bin.lz");
+const u32 gPokenavCityMap_Petalburg_0[] = INCBIN_U32("graphics/pokenav/region_map/city_maps/petalburg_0.bin.lz");
diff --git a/src/data/region_map/region_map_layout.h b/src/data/region_map/region_map_layout.h
new file mode 100644
index 000000000..7a67685c7
--- /dev/null
+++ b/src/data/region_map/region_map_layout.h
@@ -0,0 +1,18 @@
+static const u8 sRegionMap_MapSectionLayout[MAP_HEIGHT][MAP_WIDTH] =
+{
+    {MAPSEC_NONE, MAPSEC_ROUTE_114, MAPSEC_ROUTE_114, MAPSEC_FALLARBOR_TOWN, MAPSEC_ROUTE_113, MAPSEC_ROUTE_113, MAPSEC_ROUTE_113, MAPSEC_ROUTE_113, MAPSEC_ROUTE_111, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_119, MAPSEC_FORTREE_CITY, MAPSEC_ROUTE_120, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE},
+    {MAPSEC_NONE, MAPSEC_ROUTE_114, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_MT_CHIMNEY, MAPSEC_MT_CHIMNEY, MAPSEC_ROUTE_111, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_119, MAPSEC_NONE, MAPSEC_ROUTE_120, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE},
+    {MAPSEC_ROUTE_115, MAPSEC_ROUTE_114, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_MT_CHIMNEY, MAPSEC_MT_CHIMNEY, MAPSEC_ROUTE_111, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_119, MAPSEC_NONE, MAPSEC_ROUTE_120, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_SAFARI_ZONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE},
+    {MAPSEC_ROUTE_115, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_LAVARIDGE_TOWN, MAPSEC_ROUTE_112, MAPSEC_ROUTE_112, MAPSEC_ROUTE_111, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_119, MAPSEC_NONE, MAPSEC_ROUTE_120, MAPSEC_ROUTE_121, MAPSEC_ROUTE_121, MAPSEC_ROUTE_121, MAPSEC_ROUTE_121, MAPSEC_LILYCOVE_CITY, MAPSEC_LILYCOVE_CITY, MAPSEC_ROUTE_124, MAPSEC_ROUTE_124, MAPSEC_ROUTE_124, MAPSEC_ROUTE_124, MAPSEC_ROUTE_125, MAPSEC_ROUTE_125, MAPSEC_NONE, MAPSEC_NONE},
+    {MAPSEC_ROUTE_115, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_111, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_119, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_122, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_124, MAPSEC_ROUTE_124, MAPSEC_ROUTE_124, MAPSEC_ROUTE_124, MAPSEC_ROUTE_125, MAPSEC_ROUTE_125, MAPSEC_NONE, MAPSEC_NONE},
+    {MAPSEC_RUSTBORO_CITY, MAPSEC_ROUTE_116, MAPSEC_ROUTE_116, MAPSEC_ROUTE_116, MAPSEC_ROUTE_116, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_111, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_119, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_122, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_124, MAPSEC_ROUTE_124, MAPSEC_ROUTE_124, MAPSEC_ROUTE_124, MAPSEC_MOSSDEEP_CITY, MAPSEC_MOSSDEEP_CITY, MAPSEC_NONE, MAPSEC_NONE},
+    {MAPSEC_RUSTBORO_CITY, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_VERDANTURF_TOWN, MAPSEC_ROUTE_117, MAPSEC_ROUTE_117, MAPSEC_ROUTE_117, MAPSEC_MAUVILLE_CITY, MAPSEC_MAUVILLE_CITY, MAPSEC_ROUTE_118, MAPSEC_ROUTE_118, MAPSEC_ROUTE_123, MAPSEC_ROUTE_123, MAPSEC_ROUTE_123, MAPSEC_ROUTE_123, MAPSEC_ROUTE_123, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_126, MAPSEC_ROUTE_126, MAPSEC_ROUTE_126, MAPSEC_ROUTE_127, MAPSEC_ROUTE_127, MAPSEC_ROUTE_127, MAPSEC_NONE, MAPSEC_NONE},
+    {MAPSEC_ROUTE_104, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_110, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_126, MAPSEC_SOOTOPOLIS_CITY, MAPSEC_ROUTE_126, MAPSEC_ROUTE_127, MAPSEC_ROUTE_127, MAPSEC_ROUTE_127, MAPSEC_NONE, MAPSEC_NONE},
+    {MAPSEC_ROUTE_104, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_103, MAPSEC_ROUTE_103, MAPSEC_ROUTE_103, MAPSEC_ROUTE_103, MAPSEC_ROUTE_110, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_126, MAPSEC_ROUTE_126, MAPSEC_ROUTE_126, MAPSEC_ROUTE_127, MAPSEC_ROUTE_127, MAPSEC_ROUTE_127, MAPSEC_NONE, MAPSEC_EVER_GRANDE_CITY},
+    {MAPSEC_ROUTE_104, MAPSEC_PETALBURG_CITY, MAPSEC_ROUTE_102, MAPSEC_ROUTE_102, MAPSEC_OLDALE_TOWN, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_110, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_128, MAPSEC_ROUTE_128, MAPSEC_ROUTE_128, MAPSEC_ROUTE_128, MAPSEC_EVER_GRANDE_CITY},
+    {MAPSEC_ROUTE_105, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_101, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_SLATEPORT_CITY, MAPSEC_ROUTE_134, MAPSEC_ROUTE_134, MAPSEC_ROUTE_134, MAPSEC_ROUTE_133, MAPSEC_ROUTE_133, MAPSEC_ROUTE_133, MAPSEC_ROUTE_132, MAPSEC_ROUTE_132, MAPSEC_PACIFIDLOG_TOWN, MAPSEC_ROUTE_131, MAPSEC_ROUTE_131, MAPSEC_ROUTE_131, MAPSEC_ROUTE_130, MAPSEC_ROUTE_130, MAPSEC_ROUTE_130, MAPSEC_ROUTE_129, MAPSEC_ROUTE_129, MAPSEC_NONE, MAPSEC_NONE},
+    {MAPSEC_ROUTE_105, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_LITTLEROOT_TOWN, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_SLATEPORT_CITY, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE},
+    {MAPSEC_ROUTE_105, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_109, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_BATTLE_FRONTIER, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE},
+    {MAPSEC_ROUTE_106, MAPSEC_ROUTE_106, MAPSEC_ROUTE_106, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_ROUTE_109, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE},
+    {MAPSEC_NONE, MAPSEC_NONE, MAPSEC_DEWFORD_TOWN, MAPSEC_ROUTE_107, MAPSEC_ROUTE_107, MAPSEC_ROUTE_107, MAPSEC_ROUTE_108, MAPSEC_ROUTE_108, MAPSEC_ROUTE_109, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_SOUTHERN_ISLAND, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE, MAPSEC_NONE},
+};
diff --git a/src/graphics.c b/src/graphics.c
index 06007d759..8a6bbc88a 100644
--- a/src/graphics.c
+++ b/src/graphics.c
@@ -1323,8 +1323,8 @@ const u16 gPokenavMessageBox_Pal[] = INCBIN_U16("graphics/pokenav/message.gbapal
 const u32 gPokenavMessageBox_Gfx[] = INCBIN_U32("graphics/pokenav/message.4bpp.lz");
 const u32 gPokenavMessageBox_Tilemap[] = INCBIN_U32("graphics/pokenav/message.bin.lz");
 
-const u16 gRegionMapCityZoomTiles_Pal[] = INCBIN_U16("graphics/pokenav/zoom_tiles.gbapal");
-const u32 gRegionMapCityZoomText_Gfx[] = INCBIN_U32("graphics/pokenav/city_zoom_text.4bpp.lz");
+const u16 gRegionMapCityZoomTiles_Pal[] = INCBIN_U16("graphics/pokenav/region_map/zoom_tiles.gbapal");
+const u32 gRegionMapCityZoomText_Gfx[] = INCBIN_U32("graphics/pokenav/region_map/city_zoom_text.4bpp.lz");
 
 const u16 gPokenavConditionCancel_Pal[] = INCBIN_U16("graphics/pokenav/condition/cancel.gbapal");
 const u8 gPokenavConditionCancel_Gfx[] = INCBIN_U8("graphics/pokenav/condition/cancel.4bpp");
diff --git a/src/pokenav_region_map.c b/src/pokenav_region_map.c
index 39c1659a9..036ea5ff1 100755
--- a/src/pokenav_region_map.c
+++ b/src/pokenav_region_map.c
@@ -78,7 +78,7 @@ extern const u16 gRegionMapCityZoomTiles_Pal[];
 extern const u32 gRegionMapCityZoomText_Gfx[];
 
 static const u16 sMapSecInfoWindow_Pal[] = INCBIN_U16("graphics/pokenav/region_map/info_window.gbapal");
-static const u32 sRegionMapCityZoomTiles_Gfx[] = INCBIN_U32("graphics/pokenav/zoom_tiles.4bpp.lz");
+static const u32 sRegionMapCityZoomTiles_Gfx[] = INCBIN_U32("graphics/pokenav/region_map/zoom_tiles.4bpp.lz");
 
 #include "data/region_map/city_map_tilemaps.h"
 
diff --git a/src/region_map.c b/src/region_map.c
index 8157f8a4e..1d01f5a94 100644
--- a/src/region_map.c
+++ b/src/region_map.c
@@ -53,8 +53,6 @@ enum {
     TAG_FLY_ICON,
 };
 
-// Static type declarations
-
 struct MultiNameFlyDest
 {
     const u8 *const *name;
@@ -62,8 +60,6 @@ struct MultiNameFlyDest
     u16 flag;
 };
 
-// Static RAM declarations
-
 static EWRAM_DATA struct RegionMap *sRegionMap = NULL;
 
 static EWRAM_DATA struct {
@@ -78,8 +74,6 @@ static EWRAM_DATA struct {
 
 static bool32 sDrawFlyDestTextWindow;
 
-// Static ROM declarations
-
 static u8 ProcessRegionMapInput_Full(void);
 static u8 MoveRegionMapCursor_Full(void);
 static u8 ProcessRegionMapInput_Zoomed(void);
@@ -115,20 +109,18 @@ static void CB_FadeInFlyMap(void);
 static void CB_HandleFlyMapInput(void);
 static void CB_ExitFlyMap(void);
 
-// NOTE: Some of the below graphics are not in graphics/pokenav/region_map
-//       because porymap expects them to be in their current location.
 static const u16 sRegionMapCursorPal[] = INCBIN_U16("graphics/pokenav/region_map/cursor.gbapal");
 static const u32 sRegionMapCursorSmallGfxLZ[] = INCBIN_U32("graphics/pokenav/region_map/cursor_small.4bpp.lz");
 static const u32 sRegionMapCursorLargeGfxLZ[] = INCBIN_U32("graphics/pokenav/region_map/cursor_large.4bpp.lz");
-static const u16 sRegionMapBg_Pal[] = INCBIN_U16("graphics/pokenav/region_map.gbapal");
-static const u32 sRegionMapBg_GfxLZ[] = INCBIN_U32("graphics/pokenav/region_map.8bpp.lz");
-static const u32 sRegionMapBg_TilemapLZ[] = INCBIN_U32("graphics/pokenav/region_map_map.bin.lz");
+static const u16 sRegionMapBg_Pal[] = INCBIN_U16("graphics/pokenav/region_map/map.gbapal");
+static const u32 sRegionMapBg_GfxLZ[] = INCBIN_U32("graphics/pokenav/region_map/map.8bpp.lz");
+static const u32 sRegionMapBg_TilemapLZ[] = INCBIN_U32("graphics/pokenav/region_map/map.bin.lz");
 static const u16 sRegionMapPlayerIcon_BrendanPal[] = INCBIN_U16("graphics/pokenav/region_map/brendan_icon.gbapal");
 static const u8 sRegionMapPlayerIcon_BrendanGfx[] = INCBIN_U8("graphics/pokenav/region_map/brendan_icon.4bpp");
 static const u16 sRegionMapPlayerIcon_MayPal[] = INCBIN_U16("graphics/pokenav/region_map/may_icon.gbapal");
 static const u8 sRegionMapPlayerIcon_MayGfx[] = INCBIN_U8("graphics/pokenav/region_map/may_icon.4bpp");
-static const u8 sRegionMap_MapSectionLayout[] = INCBIN_U8("graphics/pokenav/region_map_section_layout.bin");
 
+#include "data/region_map/region_map_layout.h"
 #include "data/region_map/region_map_entries.h"
 
 static const u16 sRegionMap_SpecialPlaceLocations[][2] =
@@ -506,8 +498,6 @@ static const struct SpriteTemplate sFlyDestIconSpriteTemplate =
     .callback = SpriteCallbackDummy
 };
 
-// .text
-
 void InitRegionMap(struct RegionMap *regionMap, bool8 zoomed)
 {
     InitRegionMapData(regionMap, NULL, zoomed);
@@ -965,7 +955,7 @@ static u16 GetMapSecIdAt(u16 x, u16 y)
     }
     y -= MAPCURSOR_Y_MIN;
     x -= MAPCURSOR_X_MIN;
-    return sRegionMap_MapSectionLayout[x + y * MAP_WIDTH];
+    return sRegionMap_MapSectionLayout[y][x];
 }
 
 static void InitMapBasedOnPlayerLocation(void)