Villa K is located in the forested mountain range of Thüringen, and was Paul de Ruiter Architects’ first German commission. The brief was for an unobtrusive, energy-neutral villa that integrated itself into its natural surroundings. The result, built along minimalist lines, is an uncomplicated yet innovative sustainable residence composed entirely of glass, steel and concrete. ABT did the structural calculations of the glass facades and the roofs. ABT was also checking the mechanism of the sliding doors and the movable floor above the pool.