At first glance, I thought the shot, at top, was a digital manipulation. But no, it is the work of Architects CMA and SeARCH in Vals, Switzerland. The cardboard bedroom was designed by Studio JVM, whilst the rest of the interior design fell to Bjarne Mastenbroek. I equally adore the circular cave concept and the way they've treated the subterranean space with warmer woods and cardboard, and slivers of bright textiles. And then there's the outdoor blue tub. Found via ArchDaily. HF.