My cities all have "Tetris" in the name somewhere, because optimizing for space is such a huge part of the game, and because I can only dream of being able to rotate buildings.
Talvi Tetrisopolis is the biggest of the bunch. Tetris+metropolis. Talvi = winter, for the sizeable winter village currently in play.
Tetrisburg is the human city, because the faintly steampunkish looks reminded me of Germany.
Tetrisville is the second elven city.