There are eight Landmarks to visit throughout Submerged.
1. Billboard (Inside the City)
2. Bridge (Head to the NW Corner, you will need to drive through the Bridge)
3. Crane (Near the Horse)
4. Ferris Wheel (Outskirts)
5. Statue Of A Horse (this is found inside the City)
6. Eiffel Tower type Monument (Outskirts)
7. Statue (SE Corner)
8. Oil rig type structure (around the SW corner of the map)
They also appear on this map
Below is a video to show all locations on the map.