Built by Emperor Yongle in the early 15th century, the 720,000 square metres of Forbidden City was home to the imperial household. It was opened to the public in 1949. The well-preserved area boasts more than 800 buildings and 9,999 rooms. The Hall of Supreme Harmony, beautifully decorated with thousands of Dragons, was used to celebrate the Chinese emperor’s birthday. The Palace of Heavenly Purity served as the emperors’ living area and features several bedrooms.