Background: This house, located within a national park on the southwest coast of Wales, is sunk into the ground so the landscape remains nearly uninterrupted by its presence. It was completed in 1994 by design firm Future Systems. Why Its Unique: With turf-covered roofing and siding, the 222 House fits seamlessly into the surrounding field. This is exemplary sustainable design, where you are integrating the home into the site and minimizing the visual impact, Koliopoulos tells PM. The bathroom and kitchen are prefabricated pods that were lifted into the site during construction. An added benefit of the design concept is the geothermal insulation that shields the home from wind and cutting energy consumption.