Shelter No. 2, Broisson Architects, 2008 This prefab made mostly of recycled materials is modest, but not too modest for a spiral staircase. Three levels culminate in a large skylight, which filters natural light all the way down to the ground floor's hydroponic garden. Photo 9 of 10 in Seriously Tiny (and Slightly Strange) Hangouts That Push the Limits of Micro-Living by Luke Hopping

Seriously Tiny (and Slightly Strange) Hangouts That Push the Limits of Micro-Living

9 of 10

Shelter No. 2, Broisson Architects, 2008

This prefab made mostly of recycled materials is modest, but not too modest for a spiral staircase. Three levels culminate in a large skylight, which filters natural light all the way down to the ground floor's hydroponic garden.