Higeta Building Togalach Oifis a' Phrìomh Oifis by Nobuaki Miyashita

Higeta Building Togalach Oifis a' Phrìomh Oifis by Nobuaki Miyashita is a highly esteemed winner of the very prestigious 2026 Duais Òir A' Design Award in Dealbhadh Ailtireachd, Togalaichean agus Structaran Competition Category.

ÒrAiltireachd· 2026

Higeta Building Togalach Oifis a' Phrìomh Oifis

by Nobuaki Miyashita

Client: Higeta Shoyu Co., Ltd.

Duais Òir A' Design Award Winner in Ailtireachd Category

40,488
Verified Award Winner
Verify Award Status for #181285

View at A' Design Award Press Release Award Badge

Colors

The Design

About Higeta Building Togalach Oifis a' Phrìomh Oifis

'S e prìomh oifis seachd làran a th' ann an Togalach Higeta ann an Nihonbashi, Tokyo, a chaidh a dhealbhadh airson companaidh sabhs soighe a tha air a bhith stèidhichte o chionn fhada. Tha an structar de chruadhtan neartaichte air a phasgadh ann an lùbharan alùmanaim anodaichte air an suidheachadh aig astar de 300 mm bho chèile. Tha ceàrnan nan lùbharan ag atharrachadh gus grian an iar-dheas a lùghdachadh agus prìobhaideachd a dhìon, agus tha an t-uachdar a' toirt gu cuimhne achadh cruithneachd a' gluasad sa ghaoith. Tha còmhdach balla dubh domhainn a' neartachadh nan sgàilean agus a' toirt iomradh air coipeadh. Am broinn an togalaich, tha cùirt solais mheadhanach a' toirt solas an latha a-steach don phlana chumhang agus a' cur taic ri fionnarachadh nàdarra ràitheil.

The Recognition

About the Duais Òir A' Design Award

Tha Higeta Building Togalach Oifis a' Phrìomh Oifis air Duais Òir A' Design Award a bhuannachadh, aithneachadh anabarrach urramach a bheirear do dhealbhaidhean den chiad ìre, mìorbhaileach agus sònraichte. Tha buannaichean Òir nan cruthachaidhean anabarrach ùr-ghnàthach, làn lèirsinn agus drùidhteach a nochdas gèinidh, gliocas agus comas an luchd-dealbhaidh. Thathar an dùil gum bi Higeta Building Togalach Oifis a' Phrìomh Oifis na innleachd a gheibh moladh mòr, a stèidhicheas gluasadan agus mòr-chuimhneachain a bheir luach nach fhacas riamh roimhe. Tha an dealbhadh seo a bhuannaich Duais Òir A' Design Award na phròiseact sònraichte, urramach a bhrosnaicheas crìochan ealain, saidheans, dealbhaidh agus teicneolais gu mòr. Bidh Higeta Building Togalach Oifis a' Phrìomh Oifis a' cruthachadh faireachdainnean làidir miann, a' dùsgadh dealas, a' brosnachadh cruthachalachd agus a' glacadh sinn.

Behind the Design

Press Kit

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

Unique Properties: Founded in 1616, Higeta pioneered adding wheat in 1697, shaping the prototype of koikuchi soy sauce at the root of Japan's cuisine. Honored by the Edo shogunate and later recognized by the Imperial Household, its heritage is translated into architecture. This 7-story RC headquarters in Nihonbashi uses anodized aluminum louvers at 300 mm pitch, with variable angles to cut southwest sun, protect privacy, and shimmer like a wheat field over deep black walls that evoke fermentation.
Dimensions & Packaging: 7-story reinforced-concrete headquarters in Nihonbashi, Tokyo. Site area 327.00 sqm; building area 260.32 sqm; total floor area 1,722.03 sqm. Height 29.085 m; eaves 27.720 m; floor-to-floor 3.95 m; ceiling 2.70 m. Zoning: commercial; front road width 11 m. Environmental device: anodized aluminum louver screen at 300 mm pitch with variable angles for solar control and privacy. A central light court supports daylight penetration and seasonal natural ventilation.
Tags: Headquarters, Architecture, Environmental facade, Aluminum louvers, Solar shading, Nihonbashi, Cultural heritage, Koikuchi soy sauce, Wheat motif, Urban identity
Production Technology: Facade: electrolytically colored aluminum louvers, bead-blasted then anodized, for a warm, durable sheen. Each louver is 50 mm (face) x 170 mm (depth) x 3,935 mm (height), set at 300 mm pitch with carefully varied angles. Angled plates are bolted to welded channel members for precision and cost control. Louvers continue across operable entrance doors so the facade reads as one layer. Black elastic spray coating deepens shadows and recalls fermentation richness.
Design Challenge: Challenge: on a narrow, deep Nihonbashi site, create a strong symbol while cutting southwest sun and protecting privacy for adjacent housing. The facade could not be heavy or closed. Identity, comfort, and buildability were unified into one continuous louver layer, tuned in pitch and angle as a climate filter. Another challenge was cultural translation: to show global jurors that Japan's everyday taste grew from Higeta's 1697 wheat innovation. History becomes geometry, shadow, and airflow.
Research: Type of Research: design research. Objective: translate Higeta's 1697 wheat innovation into facade performance and urban identity. Method: louver-angle studies and wind-inspired curvature refinement; continuity tests for joints and operable doors. Tools: BIM model and CFD airflow simulation for ventilation via the light court and operable openings. Result/Impact: a unified louver screen delivering shading, privacy, daylight, and seasonal ventilation, showing heritage can be performance.
Inspiration: The motif is wheat, introduced by Higeta in 1697 to define koikuchi soy sauce. We made cultural memory measurable: the facade reads as a wheat field swaying in a "wind of memory" across Nihonbashi. Louver rhythm and gentle undulation were refined through computational studies so invisible forces-wind, time, and fermentation-can be felt as geometry, light, and shadow, while also delivering real shading and privacy.
Project Duration: Location: Nihonbashi, Chuo-ku, Tokyo, Japan (2-3 Nihonbashi Koami-cho). Design: Mar 2023-Dec 2023. Construction: Feb 2024-May 2025. A 7-story RC headquarters on a narrow, deep urban lot in a commercial zone, facing an 11 m road. It presents a civic-scale facade that communicates the cultural origin of koikuchi soy sauce, born from Higeta's 1697 wheat innovation.
Operation Flow: From the street, the headquarters reads as a single louvered surface; shifting shadows suggest wheat heads in wind. The variable-angle screen filters southwest sun and sightlines, improving comfort for occupants and neighbors. Inside, a central light court draws daylight deep into the narrow plan. Operable windows on the north/south walls and at the court enable seasonal natural ventilation, supported by BIM-based airflow simulations.
Patents: Copyrights belong to Nobuaki Miyashita, 2025.
Image Credits: Image #1: Photographer Nobuaki Miyashita, Higeta Building, 2025.
Image #2: Photographer Nobuaki Miyashita, Higeta Building, 2025.
Image #3: Photographer Nobuaki Miyashita, Higeta Building, 2025.
Image #4: Photographer Nobuaki Miyashita, Higeta Building, 2025.
Image #5: Photographer Nobuaki Miyashita, Higeta Building, 2025.