Hong Kong Observatory, Government meteorological building in Tsim Sha Tsui, Hong Kong, China

The Hong Kong Observatory Headquarters stands on Observatory Hill at 134A Nathan Road in Tsim Sha Tsui. Its main structure is the two-storey 1883 Building, a rectangular brick edifice that originally housed the director's office and instruments such as wind gauges and barometers. The site also includes the Centenary Building, opened in 1983, and a lawn with rain gauges, thermometers and anemometers.

Built in 1883 on the 32-metre York Hill, the headquarters was then Tsim Sha Tsui's tallest structure, with clear views of Victoria Harbour and Lantau for weather observation. The two-storey 1883 Building was listed as a monument in 1984. The Centenary Building opened on 30 April 1983, unveiled by Princess Anne and Governor Edward Youde.

The hill and the streets around it take their name from the Observatory: Observatory Road and Observatory Court lie to the east. Every March the headquarters holds an open day for World Meteorological Day on 23 March. On the lawn, the old typhoon signal balls once hoisted on the mast are displayed, reminders of the days before radio and television when these warnings were seen across the harbour.

The site is located in an accessible area near public transportation and offers tours for visitors interested in learning about weather science. Check beforehand if specific areas are open to the public, as some operational sections may have restricted access.

In the 1910s a seismic monitoring room was built beneath the lawn, reached by a staircase from the veranda of the 1883 Building. The hill itself, York Hill, was renamed Observatory Hill after the headquarters, and the surrounding streets, Observatory Road and Observatory Court, take their names from it too.