Ondsauna
Bronze 2025

Ondsauna

by Taro SHIMOKAWA for ONDPARK

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.

Questions & Answers

8

1

What type of facility is Ondsauna classified as?

Answer

Ondsauna is classified as a sauna.

2

What award did Ondsauna win in the A' Architecture, Building and Structure Design Award in 2025?

Answer

Ondsauna was awarded Bronze in the A' Architecture, Building and Structure Design Award in 2025.

3

Which client commissioned Ondsauna?

Answer

Ondsauna was commissioned by ONDPARK.

4

Where is OND PARK, the client site for Ondsauna, located?

Answer

Ondsauna is located at OND PARK in the Takeo Onsen Recreation Village near the centre of Takeo City in Saga Prefecture.

5

What elevation is the sauna entrance located at in Ondsauna?

Answer

Ondsauna's sauna entrance is located at GL+250.

6

What elevation is the cold plunge deck located at in Ondsauna?

Answer

Ondsauna's cold plunge deck is located at GL+1000.

7

What elevation is the rooftop relaxation space located at in Ondsauna?

Answer

Ondsauna's rooftop relaxation space is located at GL+3250.

8

What is the thickness of the cross laminated timber floor slab used in Ondsauna?

Answer

Ondsauna uses a 150mm CLT floor slab.

Bronze A' Design Award Winner

Explore the complete story behind Ondsauna, an award-winning Architecture, Building and Structure Design by Taro SHIMOKAWA.

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