2 Parcels that could be randomly generated when you entered a City Center map type. This was built using the XCom 2 tools, which used Unreal 3(aka UDK).
The first parcel was a mini Stadium that took up a significant amount of negative space, while providing minimal cover. I wanted to build this because it always seemed strange there was never a stadium in any of the cities when playing XCom 2.
The second parcel was a fairly minor edit of a pre-existing parcel that added trains going through a countryside embedded into a sidewalk. The initial idea was to create a subway station underneath the marketplace, however while learning in the XCom 2 editor I found that elevation could only be added in a positive direction on the vertical axis as AI could not traverse anything that was built underground.