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10 of the smallest homes in the world

Rollit Home

Photo: Institut für Tragkonstruktion via detail.de

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Rollit Homes

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!