OMA / Chris van Duijn has won the competition to design a new campus for Hongik University in Seoul, carrying the day over SANAA, Herzog & de Meuron, Renzo Piano Building Workshop, and David Chipperfield Architects. Built in the 1950s on the slopes of the Wau mountain, the old campus had expanded and run out of land, in the process isolating itself from the adjacent Hongdae neighborhood. The project includes interwoven buildings and public spaces that meld with the existing topography. Conceived as a natural extension of the mountain, the new addition is situated below ground level. The green roofs act as paths connecting the univerity’s main access points to Hongdae. Between the buildings, sloping outdoor courtyards cascade downwards, encouraging students to interact. The courtyards bring light deep into the campus and form a continuous sequence of outdoor spaces.