Trees grow endlessly upward, a concept reflected in the vertical exterior walls clustered around the sauna room. A spiraling path leads upward to a rooftop relaxation space, mirroring the building's form. The sauna entrance is at GL+250, the cold plunge deck at GL+1000, and the rooftop at GL+3250, so the transition from sauna to cold plunge to open air follows a vertical flow. Viewing the forest at treetop height allows one to share in its growth rhythm.

Taro Shimokawa creates architecture that is both “ordinary and special,” blending Japanese tradition with contemporary design. His work balances universality and individuality, offering spaces where people find small joys in daily life. Drawing on experience in France, he fuses traditional Japanese techniques with Western design, using natural materials like domestic timber and plaster. His buildings age beautifully over time. Actively involved in education, he nurtures future architects. As a father of two who took childcare leave, he applies this perspective to childcare facilities and housing. Fluent in French, he also engages in international projects.

OND PARK opened in the Takeo Onsen Recreation Village, not far from the centre of Takeo City, Saga Prefecture. The 100-hectare site preserves a rich environment with forests where wild birds live, streams where fireflies dance, and ponds that have been selected as one of the 100 best reservoirs, and is home to a valuable ecosystem. Three main areas have been developed within the park, with camping sites, a yoga studio, sauna, café and other facilities where visitors can enjoy a variety of activities. Exercise and healing will help to improve the mind and body. And through new exchanges and healthy lifestyles, it will also contribute to community development. We aim to create a base where people can enjoy both daily life and leisure activities, raising the temperature of the people, community and region.