As if design-built for a hipster Hobbit, the House Pibo in Belgium takes advantage of sustainable technologies to make this sort of inverted dwelling 'homey'.
The split level house built by OYO Architecture is partially underground. Photovolatic panels on the home's south facade help collect sunlight, a rubber roofing membrane wraps the entire house to protect it from changing weather conditions, and insulation between the timber framing improves energy efficiency.
Windows are positioned to take advantage of natural light and the sloping roof garden is planted with various flowering plants that change throughout the seasons.
Click here to see the inside of the home. Perhaps you can answer the question one commenter posted: "Why is there an autoclave in the kitchen?"