Ondsauna Sauna by Taro Shimokawa is a highly esteemed winner of the very prestigious 2025 A' Design Award Bürünç Baýragy in Binagärlik, Bina we Desga Dizaýny Competition Category.

BürünçBinagärlik· 2025

Ondsauna Sauna

by Taro Shimokawa

Client: Ondpark

A' Design Award Bürünç Baýragy Winner in Binagärlik Category

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Verified Award Winner

Verify Award Status for #165443

View at A' Design Award Press Release Award Badge

Colors

The Design

About Ondsauna Sauna

Ondsauna – tokaýyň içinde ýerleşdirilen sauna binasydyr. Dik daşky diwarlar sauna otagynyň daşyna toplanyp, agaçlaryň ýokary tarap ösüşini ýaňzydýar. Spiral şekilli ýol üçegdäki dynç alyş meýdançasyna alyp barýar. Girelge ýer derejesinden 250 millimetr, sowuk suwa çümmek üçin niýetlenen üçek bolsa 1000 millimetr belentlikde ýerleşýär, üçegiň özi bolsa 3250 millimetr belentlikde ýerleşdirilendir, şeýlelikde sauna otagyndan sowuk suwa, ondanam açyk howa geçiş dikligine amala aşyrylýar. Düzgünsiz köpburçlukly meýilnama we kütek burçly oturgyçlar görnüş ugurlaryny kesgitleýär hem-de myhmanlara özara gatnaşyk derejesini saýlamaga mümkinçilik berýär.

The Recognition

About the A' Design Award Bürünç Baýragy

Ondsauna Sauna A' Design Award Bürünç Baýragynyň ýeňijisidir; bu döredijilik, ussatlyk we ýiti akyl bilen tapawutlanýan tapawutly dizaýnlara berilýän aşa abraýly ykrarnamadyr. Bürünç ýeňijileri dizaýnerleriniň giň tejribesini, hyýalyny we tapawutlylygyny tassyklaýan örän ussat we geň galdyryjy derejede döredijilikli eserlerdir. Ondsauna Sauna uly baha berilýän, haýran galynýan we söýülýän, üns çekiji derejede hünärmenlikli we täzelikçi zat bolmagy garaşylýar. A' Design Award Bürünç Baýragyny gazanan bu dizaýn sungatda, ylymda, dizaýnda we tehnologiýada iň oňat tejribeleri öz içine alýar we jikme-jiklige edýän üni bilen ajaýypdyr. Ondsauna Sauna zerurlyklary ajaýyp derejede kanagatlandyrýar, isleglere degýär, duýgulary özüne çekýär we gyzyklanmany çekýär.

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties: 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.
Dimensions & Packaging: The irregular plan was chosen to allow the passage and expansion of the line of sight and to adjust the degree of intimacy, which was rationally solved by the 150mm CLT floor slab. The elimination of beams has eliminated non-perpendicular joints in the structure, contributing to labor savings in site work. The rational walls of the scale module are discretely assembled and the CLT slab connects them. This structural form itself can be described as a sociopetal structure.
Production Technology: An irregular polygonal floor plan guides sightlines, creating varied scenic views. Research shows conversations are twice as frequent at 90 degrees versus side-by-side. Here, strangers sit together, so we chose obtuse-angled benches to balance interaction and privacy, encouraging conversation without intrusion. Varied seating allows for different levels of interaction, while the overall arrangement around a fire fosters a shared experience.
Inspiration: In a sauna, strangers sit nearly naked in close proximity, creating potential intimacy. Yet in Japan, public saunas haven’t fostered this sense of community. By aligning with Japan’s unique sense of closeness, we aim to create a sociopetal space, encouraging shared understanding without forced intimacy. “Non-intrusive” walls balance connection and separation; their verticality resonates with the forest, while their spacing draws nature in and modulates closeness among neighbors.

Read the Press Release