Row House in Sumiyoshi (Azuma House)

Designed by self-taught architect Tadao Ando in 1976, the Row House in Sumiyoshi (Azuma House) is a seminal work of modernist architecture. Built on a narrow 57.3 m² plot in Osaka's dense urban fabric, the house replaces a traditional wooden row house with a fortress-like reinforced concrete structure. Its design challenges conventional residential norms by eliminating exterior windows and focusing inward around a central open-air courtyard. The courtyard, occupying one-third of the site, serves as the spatial and philosophical core, mediating light, wind, and rain while forcing inhabitants to interact with nature daily.

The house is divided into three equal sections: living spaces on the ground floor, private bedrooms on the upper level, and the courtyard bridging both. Movement through the house requires crossing the courtyard, even in inclement weather, a design choice criticized for impracticality but celebrated for its poetic rigor. Ando’s use of raw concrete—unadorned and textured by formwork—creates a meditative atmosphere, while materials like glass, slate, and wood soften the austere interiors.

Awarded the Japan Architectural Institute Prize in 1979, the Azuma House established Ando’s signature style: blending Brutalist materiality with traditional Japanese aesthetics. It inspired later works like the Church of the Light and Church on the Water, where nature is abstracted into light and water. The house’s radical simplicity and emphasis on spatial experience over comfort have made it a subject of both acclaim and controversy, with critics debating its livability.

When the owner complained that the house was cold, Ando famously replied that he should put on another sweater; the Azuma family, for their part, stayed on for more than 35 years — the quietest rebuttal in the livability debate. Today, the Azuma House remains a pilgrimage site for architects, symbolizing Ando’s belief that 'architecture should remain silent and let nature speak'.