Directly behind the Rostrum, was home to 24 emperors beginning with its creation by Emperor Yongle in 1420 until the last Qing emperor, Puyi, left in 1924. The entire complex consists of 8,706 rooms in which an estimated 8,000 to 10,000 people lived including 3,000 eunuchs, as well as maids and concubines, all within 170 acres. Behind walls more than 30 feet high and within the 160-foot moat, complex rules and rituals dictated life in the Imperial Palace. Strictly off-limits to Chinese ordinary people (hence the name) the gates today lead to a fascinating display of Chinese history in what is probably the best-preserved site of Classical Chinese architecture.