Big Ben Clock Tower The Great Clock Clock Tower The Great Clock Officially known as the Elizabeth Tower
fully operational on September 7, 1859 fully operational on September 7, 1859 completed on 10 April 1858 completed on 10 April 1858
Located at the north end of the Palace of Westminster in LondonPalace of Westminster in London
The south clock face being cleaned on 11 August 2007 The clock and dials were designed by Augustus Pugin
The clock dials are set in an iron frame 23 feet (7.0 m) in diameter, supporting 312 pieces of opal glass, rather like a stained-glass window.stained-glass window.
The largest bell in the tower and part of the Great Clock of Westminster. The bell is better known by the nickname Big Ben
The clock has become a symbol of the United Kingdom.