The Forbidden city, also named ‘Imperial Palace’, ‘Palace Museum’ or in Pinyin ‘Gugong’. At the city center is the imperial palace complex of 24 Ming and Qing dynasty emperors. In imperial times it was called as the Purple Forbidden City from the association of the emperors with the color of the Pole Star. Surrounded by 10 meter (32 feet) high walls and gates and a 50m (164 ft.) wide moat, it was inaccessible to ordinary people, but well populated by imperial family members, their servants and staffs, officials, and guards.

The major ceremonial buildings of the palace are aligned on a north-south axis that extends beyond the walls toward the Temple of Heaven complex and Yongding Gate in the south. The main entrance to the palace complex is via the Meridian Gate (Wumen), from which the New Year was announced each year by the emperor, proclamations were read, and the fate of prisoners decided. Past five white marble bridges and the Gate of Supreme Harmony, a great courtyard could accommodate up to several thousand people for state ceremonies such as the imperial weddings.

The three most important ceremonial buildings are on the north-south axis, raised on a high white marble terrace, and accessed by ramps carved with ornate dragons over which the emperor was carried in a palanquin. The three main halls and associated side buildings formed the outer courtyard of the Forbidden City, devoted primarily to official and ceremonial functions, but including imperial libraries and studies. The inner chambers at the rear of the Forbidden City included private living and sleeping quarters of the imperial family, divided into three palaces and twelve courtyards. The Western Palaces were the residences of empresses, concubines, and princes. The Eastern Palace halls are now used as museum exhibition spaces, devoted to ritual bronze vessels, ceramics, craft objects, antique clocks, and paintings, including objects from the imperial collections and archaeological finds. The back precincts include the Palace of Aging Peacefully (Ningshou Gong) where the Qianlong Emperor of the late 18th century spent his retirement years.