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Chinese Yaodong Typical to Northern China, this style of carving houses into the hillside, called yaodong, dates back to the second millennium BC and is still employed today. Since any change in the temperature of the dense earth occurs very slowly between seasons, earth shelters such as these remain temperate year-round.
Matmata, Tunesia-When "Hotel Sidi Driss" became famous for being chosen for the 1976 movie, "Star Wars," as Luke Skywalkers childhood home on Tatooine, it became famous. Berbers live in this tiny subterranean village, as it keeps them cool in the extreme heat and guards them from the horrendous sandstorms.
French Troglodyte Homes Domesticated cave dwellings are usually called "troglodyte homes," and the Loire River Valley in France is full of them. Excessive quarrying of the local rock in the 11th century created cavities in the hills and plains, and not surprisingly, people moved in... and never moved out.
Proving the UK loves its hobbit holes, this completely subterranean residence is also the first zero-carbon property in North West England. The Bolton Eco House is "designed to use less energy than it creates. A ground source heat pump, photovoltaic panels, and a wind turbine will generate on-site renewable energy."