

bang by min carves angular external stairway from concrete mixed-use building in seoul

all images by joonhwan yoon

located on a busy street within the gangnam district in seoul, south korea, locally-based firm bang by min has designed the distinctive ‘interrobang’ mixed-use building to stand as a recognizable local landmark, while responding to its surrounding environment.



the staircase which runs all the way through the building has been placed on the outside

the multi-purpose structure has been organized with a flexible layout in order to adapt with potential changes in its internal program. to maximize rentable space, areas designated for communal and public activity have been reduced in size, while the stairway connecting the whole building has been placed on the outer perimeter. the unusual form towers among its surroundings, emphasized by the square and angular openings puncturing the concrete façade, allowing plenty of light and a variety of views to be provided in the interior.

‘the vertical reconfiguration of various programs occupying the street was an attempt to create a three-dimensional street that would revitalize small-scale culture.’ architect sae min oh comments, ‘if the vertical extension of the street can create a mutual synergistic effect, it will provide the grounds for a chain-reaction and a self-symbiosis of a program with little difficulty.’



the building towers over its compact neighborhood



different sized square windows interrupt the external façade



a succession of openings invite light into the bare, concrete space



flexibility was one of the main goals which drove the organization of the internal program



the staircase connecting the floors wraps around the building



the common areas, including the elevator, the staircase, and bathrooms have been reduced to maximize rental space



the scheme is located cheongdam-dong, gangnam