Architecture, Building and Structure Design Donghulin Guest House Residential by Fon Studio Donghulin Guest House is a guest house set on a mountainside above a village. Three pitched roofs of different heights respond to the height difference of the site and separate the functional layout of the interior. The gaps formed between the roofs follow the lines of the natural landscape. A dark greyish tone keeps the building in harmony with its surroundings. The main structure is made of poured concrete. The number of guest rooms is limited, and a large public area is kept free so that the operators can use the space in flexible ways.