The Forbidden City occupies 72 hectares in the geographic center of Beijing, enclosed by walls 7.9 meters high and a moat 52 meters wide. Construction began in 1406 under the Yongle Emperor of the Ming Dynasty and concluded in 1420, involving an estimated 100,000 artisans and one million laborers. The complex comprises 980 surviving buildings containing 8,704 rooms, though the commonly cited figure of 9,999 rooms is symbolic rather than literal. The layout follows a strict north-south axis aligned with the cardinal directions, dividing the compound into an Outer Court for ceremonial functions and an Inner Court for residential quarters.
The southern entrance, the Meridian Gate, stands 37.95 meters tall with five openings. Only the emperor used the central opening, except during imperial weddings when the empress entered once and during the palace examinations when the top three scholars exited. The gate's U-shaped platform held drummers and bell ringers who announced the emperor's movements. Beyond this lies the Gate of Supreme Harmony, which leads to the largest courtyard capable of holding audiences of 100,000 officials arranged by rank in squares marked on the stone pavement.
The Hall of Supreme Harmony, built on a three-tiered marble terrace 8.13 meters high, rises 26.92 meters at its ridge and measures 63 by 37 meters in plan. The roof carries yellow glazed tiles weighing approximately 140 kilograms each, totaling over 300,000 tiles. The hall contains the Dragon Throne, positioned on a dais with seven steps, beneath a ceiling decorated with a coiled dragon holding a silver sphere called the xuanyuan mirror. This hall hosted 24 emperors during coronations, imperial weddings, and New Year ceremonies. The interior holds six gold-lacquered columns each exceeding one meter in diameter, and the floor consists of bricks specially baked for 29 days to achieve water resistance.
The Hall of Central Harmony, a square building 27 by 27 meters, served as the emperor's preparation room before major ceremonies. Here emperors reviewed speeches, inspected seeds before the spring planting ritual, and examined genealogy records of the imperial clan. The hall contains the sedan chair used to transport the emperor the short distance to the Hall of Supreme Harmony, as walking that distance was considered beneath imperial dignity.
The Hall of Preserving Harmony, the third hall on the central axis, measures 55 by 29 meters and hosted the final stage of imperial examinations from 1789 onward. Behind this hall lies the largest single carved stone in the Forbidden City, a ramp weighing approximately 200 tons and measuring 16.57 meters long, carved with nine dragons amid clouds and waves. Workers transported this stone during winter by pouring water on the road to create ice, then sliding it along with rollers. The journey from the quarry 50 kilometers away required 20,000 laborers and 28 days.
The Inner Court begins with the Palace of Heavenly Purity, which served as the emperor's bedroom until the Yongqing Emperor moved to the Hall of Mental Cultivation in 1722. The building measures 37 by 29 meters and contains a throne where emperors conducted daily administrative work. Above the throne hangs a plaque inscribed with the characters "zhengda guangming," meaning upright and honorable, behind which emperors placed sealed edicts naming their chosen successor.
The Hall of Union and Peace, located between the Palace of Heavenly Purity and the Palace of Earthly Tranquility, houses 25 imperial seals used for different administrative purposes, including the Heirloom Seal of the Realm, though the original jade seal from the Qin Dynasty was lost centuries before the Forbidden City's construction. The hall also contains a clepsydra water clock constructed in 1745 with five bronze vessels calibrated to measure time through regulated water flow, and a chiming clock from 1798 with a mechanism that strikes hours and quarters.
The Palace of Earthly Tranquility underwent conversion to a Manchu-style shrine after 1644 when the Qing Dynasty began, with shamanic rituals performed daily involving pig sacrifices. Two caldrons used for boiling sacrificial meat remain in place. The western rooms served as the bridal chamber for imperial weddings, though most emperors spent only one night there as tradition required before returning to their usual quarters.
The Imperial Garden occupies 12,000 square meters at the northern terminus of the central axis. It contains 20 structures including pavilions and halls, connected by pebble mosaic pathways depicting 900 different scenes and patterns. The garden holds 160 ancient cypress trees, several exceeding 400 years in age, and rockeries constructed from Taihu stones transported from quarries near Lake Tai. The Hill of Accumulated Refinement, an artificial mound in the northeast corner, reaches 14 meters high and holds a pavilion where the emperor observed the city on the Double Ninth Festival.
The Six Eastern Palaces and Six Western Palaces, arranged symmetrically on either side of the central axis, housed empresses, consorts, and concubines. Each palace follows an identical layout with a main hall, side chambers, and a courtyard, though interior decoration varied by rank. The Palace of Prolonging Happiness in the eastern section burned in 1923, destroying the Qing imperial collection of calligraphy and paintings stored there. The Palace of Eternal Harmony in the western section contains a well 16.4 meters deep where the Guangxu Emperor's favored consort was reportedly drowned on orders from Empress Dowager Cixi in 1900.
The Hall of Mental Cultivation served as the emperor's primary residence and administrative center from 1722 until 1911. The building measures 36 by 12 meters and contains a throne room, bedchamber, and two studios. The eastern chamber, called the Hall of Three Rarities, once housed three celebrated works of calligraphy collected by the Qianlong Emperor. The western chamber contains the bed where the Tongzhi Emperor died in 1875 at age 19 and where the Guangxu Emperor died in 1908 at age 37, both under circumstances historians continue to debate. Behind a screen in the throne room sits a second throne where Empress Dowager Cixi sat while issuing orders in the name of child emperors during two periods of regency totaling 47 years.
The Hall for Worshipping Ancestors, located in the southeastern section, contains spirit tablets for deceased emperors and select empresses. The hall measures 59 meters in length and holds a throne before which emperors performed annual rituals on solstices and equinoxes. Adjacent stands the Imperial Ancestral Temple, technically outside the Forbidden City proper but functionally connected, where major state sacrifices occurred on the first day of each season.
The Palace of Abstinence in the southwestern corner provided quarters where the emperor fasted for three days before performing sacrifices at the Temple of Heaven. The building contains no decorative carvings or bright colors, only plain wood and white walls, and the courtyard holds a bronze pavilion cast in 1420 weighing approximately 207 tons.
The Hall of Literary Profundity, built in 1420 and reconstructed in 1774, housed the imperial library containing rare books and manuscripts. The Qianlong Emperor commissioned the Siku Quansu, a collection of 3,462 texts in 36,381 volumes, with one complete copy stored here in black lacquer cabinets. The building employed architectural features from southern libraries, including a pool in front to provide water in case of fire.
The Palace Museum collection contains 1,862,690 catalogued items as of 2019, including ceramics, paintings, calligraphy, bronze vessels, jade objects, clocks, textiles, and furniture. The ceramics collection holds approximately 367,000 pieces spanning from the Neolithic period to the Qing Dynasty, with Tang Dynasty tri-color glazed pottery and Song Dynasty Ru ware among the rarest categories. The painting collection includes 53,000 works, with 340 attributed to or associated with Zhang Zeduan, Li Gonglin, and other masters active before 1300. The jade collection contains 30,000 pieces, including ritual objects from the Shang Dynasty and decorative items commissioned by Qing emperors.
The bronze collection holds 15,000 vessels, weapons, and implements, with some inscribed pieces dating to the Shang and Zhou dynasties providing primary source material for early Chinese history. The clock collection comprises 1,500 timepieces from European and Chinese workshops, assembled through diplomatic gifts and imperial purchases during the 18th and 19th centuries. The Qianlong Emperor maintained workshops within the Forbidden City where craftsmen repaired imported clocks and constructed new pieces combining Western mechanisms with Chinese decorative elements.
The textiles collection includes imperial robes embroidered with dragon motifs, the number and position of dragons indicating the wearer's rank. Emperor's robes typically displayed nine five-clawed dragons, while princes' robes showed four-clawed dragons. The collection preserves 100,000 textile items including tapestries, embroidered silk panels, and costume elements, many employing peacock feather thread technique that produces iridescent color effects. Storage conditions maintain temperature at 18 degrees Celsius and relative humidity at 55 percent to prevent degradation of organic materials.
The furniture collection contains 6,200 pieces including thrones, tables, cabinets, and screens constructed from precious hardwoods. Several pieces employ zitan wood, a slow-growing species from tropical regions that requires 800 years to reach harvesting size, valued for its density and deep purple-black color. Other pieces use huanghuali wood, recognized by its golden-brown color and flowing grain patterns. Construction follows mortise-and-tenon joinery without nails or screws, a technique allowing furniture to expand and contract with humidity changes while maintaining structural integrity.
The Palace Museum archives contain 400,000 historical documents including imperial edicts, administrative records, and private correspondence. The Grand Council archives preserve daily records of imperial government from 1729 to 1911, documenting decision-making processes on military campaigns, diplomatic relations, appointments, and budget allocations. The Qing Dynasty Jade Archive records biographical data for every person granted an imperial title, including birth dates, death dates, family relationships, and burial locations.
The Hall of Clocks and Watches displays 120 timepieces from the collection, including a gilt-bronze automaton elephant clock standing 1.88 meters tall with moving parts that activate on the hour, constructed in Britain circa 1740 and presented to the Qianlong Emperor. Another displayed piece, an enamel and gilt-bronze writing automaton figure from 1760, raises a brush and inscribes characters on paper through a cam mechanism, demonstrating the 18th-century European fascination with mechanical simulation of human actions.
The Treasure Gallery in the eastern section displays gold, jade, and gemstone objects from the imperial collection, including a jade mountain carving 2.24 meters tall and weighing 5.35 tons, carved from a single nephrite boulder transported from Xinjiang to Beijing, requiring four years of labor by jade workers in the 1780s. The carving depicts a landscape scene with inscriptions from earlier emperors and scholars. The gallery also contains the ceremonial armor of the Qianlong Emperor, constructed from steel plates joined with brass rivets and decorated with gold-washed designs, weighing approximately 35 kilograms.
The northern sections of the palace complex, called the Qianlong Garden, occupy 5,200 square meters and comprise four courtyards with 27 structures built between 1771 and 1776 as a retirement residence for the Qianlong Emperor, who abdicated in 1795 after 60 years to avoid reigning longer than his grandfather Kangxi. The emperor never actually resided in this garden, continuing to govern from the Hall of Mental Cultivation until his death in 1799. The complex includes a three-story theater building called the Pavilion of Pleasant Sounds, with trap doors and mechanisms for staging performances involving supernatural entrances and exits.
- [Architectural documentation: UNESCO World Heritage Centre Forbidden City documentation whc.unesco.org/en/list/439/documents]
- [Historical archives: First Historical Archives of China on Qing Dynasty administrative records]
- [Conservation reports: Palace Museum conservation department publications on materials analysis and restoration methods]