© Hiroshi Nakamura & NAP


Hiroshi Nakamura & NAP

Tochigi, Japan

Hiroshi Nakamura & NAP

© Hiroshi Nakamura & NAP


186 sqm

From the architects. The site is located in Nasu, Tochigi Prefecture, a well-known summer resort. Passing through fields and woodlands, the site lies along the forest path in a grove of mixed trees. Our client is a married couple that enjoys organic farming on the weekends, and their wish was to reserve as much of the environment as possible and to live in the surrounding woods. We avoided large-scale construction and a majority of felling to build the rooms on the few remaining flat surfaces of the sloping ground, as if sewing them together.

Since the site is located in the midst of dense woods, we came up with the idea of having a high ceiling to let direct sunlight in the house. However, this would result in the space becoming too large, cost a lot to run the air-conditioning and the exterior walls would bump into the branches. Therefore, we eliminated unnecessary space. First, we cut down the upper space diagonally to make the ceiling lower based on the way people move. In addition, the new form matches the tree branches that spread out radially. This resulted in a tent-shaped house with only one third of the volumes. Although the highest ceiling is 8m, the average ceiling height dates a standard 2,6m. As a matter of fact, people cannot stand upright close to the walls, so we simply turned the spaces into sleeping and sitting areas. The ceiling descends like a tent and enables the creation of a warm living space that mingles with the trees. You will feel the warmhearted embrace of the house around you.


It is similar to primitive spaces seen in the houses of the Jomon People (Ancient Japanese) and Native Americans. The structure of the house initiated a lifestyle with close interaction, because the family sat along the low wall facing each other. A fire, a light or a table was set in the middle to initiate conversation as the family gathered around the center. The architecture has had an influence on people's habits and it strengthened the connection and bond of the family. 

At night, the moonlight becomes the only natural illumination and the dark forest falls into silence. At times, the presence of wild animals can be heard ever so faintly. In the darkness of the night, you will find a house filled with warm and gentle looks.


The "pointy-hat" building cantilevers slightly above ground in order to prevent insects, humidity and fallen snow entering the house.

The windows are all double glazed in order to ensure that the tall spaces are airtight and well insulated. We installed the fireplace and the air-conditioning underfloor by making use of the floor heating and the pit.

During summer, warm air gathers at the top and escapes through the top light side window. During winter, warm air at the upper part will be drawn in and blown out at floor level. This way, we are able to create a very comfortable air environment.


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