Overlooking the San Francisco Bay and Mount Tamalpais, this rustic modern retreat hugs the Earth at such a steep slope that from the living room it looks as though you're floating untethered above the tree line. They even managed to carve out a long outdoor lap pool in back, beneath its sprawling green roof. A lovely home no doubt, at least until you try to find any company willing to insure it from mudslides. [See more]
Joe McGauley is a senior editor at Supercompressor. If it's as much fun as Fraggle Rock, he's more than down to live underground.