The Government Complex Sejong (Korean: 정부세종청사) is a government building built to create a multi-functional administrative city by relocating central administrative agencies to the non-metropolitan area for the purpose of decentralization, balanced development, and overcrowding in the metropolitan area.

There is no separation between departments or individuals, and desks are arranged together regardless of position. It is equipped with an employee lounge, multipurpose communication space, and conference room.

There is a roof garden inspired by Sunseongnori, Korea's Traditional Play, it was listed in the Guinness Book of World Records in 2016 as the world's largest (3.6 km) garden with 15 buildings connected.