Students at the University of Karlsruhe in Germany designed these chic modular homes, which are built to incorporate multiple uses inside one small living space. The home functions like a mouse on a wheel; the homeowner can change the structure of the house by walking in the center to rotate it. With just a little bit of daily exercise, the unit can be turned to reveal a bed, lounge chair, table, shower, toilet, or a kitchen sink — all in the same space!
How did they do this!?