This unique concrete tower in the middle of the forest was built by Wespi de Meuron Romeo Architects. The outer shell resembles an irregular pentagon, inside this pentagonal form there is a rectangle representing the interior space. The rough concrete surfaces darker with the passage of time, this allowing the house to easily blend in with the surroundings. The interiors are minimalist and a bit rough: concrete and slab panels cover the floors, wall and ceilings. The furniture is also minimalist, and light-colored wood makes décor a bit more peaceful and soft. There are several bold pops of color with art works, which also help to create an ambience.