关内集合住宅（Kannai Blade）的名称源于其外立面上的一系列纤薄的混凝土叶片。该建筑由 KEY OPEARATION INC. / ARCHITECTS 设计，位于横滨市的一个街区转角处，距离便捷的横滨关内火车站仅有 5 分钟的步行路程，且与东京市中心相距不远。

The Kannai Blade Residence – so called because its facades are intersected with thin, bladelike concrete fins – has been designed by the Japanese architectural studio KEY OPEARATION INC. / ARCHITECTS. It sits on a corner site within a 5-minute walk of the well-connected Yokohama Kannai Train Station, not far from central Tokyo.

▼项目外观，exterior view © Toshiyuki Yano

▼屋顶鸟瞰，aerial view© Toshiyuki Yano

住宅楼共包含 11 个楼层，它取代了原先建造于战后时期的 4 层办公大楼“不老町 2 丁目第一共同大楼”。原先的建筑由 Miyauchi Architects 设计，采用了当时典型的低层混凝土结构，起到防火屏障的作用。

The new 11-storey housing block replaces the 4-storey post-war office building known as “Furocho 2-chome Daiichi Kyodo Building.” The original building was designed by Miyauchi Architects in a style typical of the time, built in concrete, characteristically robust and low-rise, functioning as a firebreak. During WWII, much of Yokohama City was razed to the ground leading to the government-sponsored reconstruction efforts to comply with strict fire regulations.

The same area is currently facing rapid changes through Private Finance Initiative, PFI, funded redevelopment. The site across the street from the Kannai Blade Residence will accommodate the new Yokohama United Arena, remodelled after the Yokohama Cultural Gymnasium (built in time for 1964 Tokyo Olympics and demolished in 2020). In the vicinity, a new campus building for Kantou Gakuin University is nearing completion. This is being built on the site that used to accommodate Kunio Maekawa’s Cultural Educational Centre, built in 1974, now demolished after it was deemed that the structure was not compliant with today’s seismic standards.

▼大楼主立面，main facade of the building© Toshiyuki Yano

▼侧立面，lateral facade© Toshiyuki Yano