1 Constructed in 1419 during the Ming dynasty, the "Zhengyang Gate", the triple-eaved Xieshanding style tower, with green glazed tiled structure is located on the southern perimeter of Tian'anmen Square.
2 The structure measures 203 feet (62 meters) in length, 39 feet (12 meters) in width and 85 feet (26 meters) in hight. This includes the 4 storey watchtower, which was built in 1439 and contains 94 embrasures (arrow slits) that open to the east (21), west (21) and south sides (54).
3 Zhengyang Gate was one of nine, and the tallest gate, that made up the Inner City wall that ran 15 miles (24 kilometres) long, 49 feet (15 meters) high, with a thickness of 66 feet (20 meters) at ground level and 39 feet (12 meters) at the top.
4 The encirculing wall, with the exception of a small section near Beijing Railway Station, was demolished in 1965 to allow construction of the 2nd Ring Road and Line 2 of the Beijing Subway.
5 The gate was for the exclusive use of only the Emperor when visiting "Tiantan " (The Temple of Heaven), in the outer city, to make offerings.
