This beautiful 38-degree barrel-vaulted private residence is located near the Bavarian Alps in Kempten, Germany, and sprouts a variety of local grasses, flowering herbs, and succulents. The Optigrün / Optigreen greenroof system consists of a drainage mat, mechanical slope stabilization system, and planting by vegetation mats.

The wood-frame house was built in 1998. The same contractor built a similar house in Woerth in 2002. The roof has a synthetic waterproofing membrane and insulation layer with integrated anti-slip system. The roof has a synthetic waterproofing membrane and insulation layer with integrated anti-slip system. The growing medium depth is about 12 cm (5 in), and the drains are in the middle of built-in gutters and water is directed away with downspouts.