Exterior and Stone Siding Material Villa Vals, a four-bedroom vacation rental in the stunning Alpine village of Vals, Switzerland, is not your conventional ski resort home. 
Completed in 2009, this unusual villa that's available for rent through Boutique Homes, is embedded into the hillside, making most of its functional spaces subterranean. A dramatically-recessed shape gives the villa the quality of a modern art installation, while the organic shape of its central terrace—the only part of the house that can be seen from the outside—seems to meld with the natural landscape.  Photo 13 of 13 in Stay in a Swiss Vacation Home That's Literally Inside a Mountain