The Duanmen (Upright Gate) sits between Tiananmen (Gate of Heavenly Peace) and Wumen (Meridian Gate), the main entrance to the Forbidden City. The gate was built in 1420 during the Ming Dynasty (1368 - 1644). The Forbidden City, built between 1406 and 1420, served for 500 years (until the end of the imperial era in 1911) as the seat of all power in China, the throne of the Son of Heaven and the private residence of all the Ming and Qing dynasty emperors. The complex consists of 980 buildings with 8,707 bays of rooms and covers 720,000 m2 (7,800,000 sq ft).