I've been trying to recreate a certain map image through Tiled, and was wondering if there was a tool to add district tiles, not just spawn locations. I'd basically be looking to start the game with a City already founded in a region for example. 

Alternatively, is there a way to create districts/cities through the modding tools ingame? 

Thank you 

I spent a few days thinking about this problem, and might have come to a conclusion. 

What I'm trying to have is the art, or models, of the city tiles on the map at the start of the game, to give it the feel of an already populated area, but one that can be moved through. Would it be possible to create a new anomaly type, give it an existing city tile art, and then place it in Tiled that way? If so, what steps would I need to take to do so? 

Otherwise, would there be another way to add an outside 3D model, or tile art to the game (for example, a tile that replaces something like enchanted forest with a different 3D model)? 

Thank you