This small home in China is built on top of a tricycle.

Size: About 33 sq. ft. when folded

Location: Beijing

Beijing’s People’s Architecture Office and People’s Industrial Design Office designed and built a polypropylene mobile home so small that it can be folded up, accordion-style, and carted around on the back of a tricycle.

The expandable home can attach to others for more space, or to portable gardens to give the appearance of a “yard.” Facilities in the house include a sink, stove, bathtub, and water tank. All the furniture is convertible: the bed becomes a dining table, the countertop becomes a bench for seating, and it can all fold up into the front wall.