futuristic Domespace homes have been around for more than 20 years, but they're still ahead of the curve. These custom builds can be ordered in four varieties, including the Harmonique famous rotative house. The entire structure rotates, allowing homeowners to make the most of the sun's warmth for lower utility bills. It's a biconvex structure that’s raised from the ground, providing a shield from moisture and ground radioactivity. All windows in the unit face the sky, allowing for optimal natural luminosity. Safe home qualities include resistance to high-magnitude earthquakes and high winds. The homes are available in sizes ranging from 656 square feet to 6,307 square feet.