Exterior, Wood Siding Material, House Building Type, Metal Siding Material, Metal Roof Material, and Flat RoofLine Churtichaga and de la Quadra-Salcedo purchased a parcel of former farmland to build their vacation home twelve years ago but only recently completed the house—a timber-clad minimalist structure expertly designed to disappear into the scenic landscape.  Photo 1 of 3 in House of the Week: Timber Box Home in the Middle of the Spanish Countryside