Interrobang Building by Sae Min Oh

Mixed-use concrete tower in Seoul, South Korea.

The building faces onto a busy road in the Cheongdam-dong ward of Gangnam, the South Korean capital's high-end shopping district. It contains six stories, intended to host a mixture of offices, shops and cafes. The structure presents a mixture of exposed concrete and stainless steel surfaces, and a glazed box projects from its top. The external stairs are designed to help the building act as a vertical continuation of the street and concrete benches are stationed along its course.