World's Wildest Houses III

Dancing Rabbit Ecovillage, Missouri

A 24-year-old named Ziggy built this eco-friendly cob house (also known as "The Gobcobatron") for about $3,000. Over nine months and with the help of about 75 visitors and friends, Ziggy "stomped" 219 batches of cob—that is, he literally pounded his feet over a barely wet mixture of straw, clay, and sand, molding it into curvy walls. "When designing my cob house, it was a goal to keep building costs very low and obtain as many building materials as locally as possible," the builder says.