In Chicago there is one block just north of Wrigley Field that was a demo for a planned community decades ago. Each of the 10 or so connected houses on one side of the street are all different. The opposite side of the street is identical, but mirrored. That means the northernmost house on the west side of the street is identical to the southernmost house on the east side of the street. The effect is that it looks like a very unique and natural community in spite of being completely planned and regimented.