Here are 3 fun designs (via notcot):

-Tree Trunk Garden House.
- Beijing Noodle Restaurant design
- Moonvilla Concept (as seen above. more pictures)

The Moonvilla has an outer shell/screen that revolves with the sun to regulate the climate inside. Neat. Although I wouldn’t want to be around when the motor is on the blink. Having said that, there is cleverly a little underground level built into the design.

There are no stairs. Due to the lack of gravity on the moon, people can leap from floor to floor!