Villa Vals, Vals, Switzerland
This Swiss Mountain underground house vas build in 2009 by design of SeARCH and Christian Muller Architects. The house, while essentially a hole in the hillside, is flooded with natural light and has majestic Alpine view through a wide, elliptical opening in the hillside, revealing spacious outdoor entertaining areas that lead to the home's main entrance. There is a second alternative entrance with 22m underground tunnel that links the house to a nearby traditional Swiss barn. Architects, features all the comforts of home, plus a few modern twists including four bedrooms, a stunning kitchen, a cardboard library, and a courtyard with a hot tub and natural spring.