The Villa Vals in Switzerland is a pair of dwellings built into a hillside with the intention of remaining concealed and unobtrusive to the natural beauty surrounding it. Set within walking distance to the famous thermal springs of Therme Vals a hotel/spa complex that is built directly over the natural springs. Villa Vals is certainly one of the coolest and unique designs I’ve come across, a joint-venture between SeARCH and Christian Muller Architects.