Simple and fun, a monument (green card) with some buildings containing loot (as in the areas in red circled in red) and a racing track, could be kart race track or maybe a little bigger, with a wire fence around it, with an entrance, big enough to the game cars go through. Races can be played or simply drive around the track.
doesnt fit the theme of the game
It totallys fit. give it a look at Tony Rust Raceway, Windhoek