Today, I found an enclave hamlet

[Donald C.]

Just a randomly generated map, I was surprised by how can this even generate. Appinglock, the enclave, is the smallest town while Torville is a megacity. Oddly enough, when I viewed the building info, some buildings within Appinglock border belongs to Torville.

[Leartin]

Probably Appinglock generated first, not filling it's border entirely (as cities do), then Torville was generated and just happened to be big enough to encompass Appinglock. City borders are rectangles, so all of Appinglock is ALSO within Torville, so Torville buildings can spawn there.