The Elizabeth Tower( "Big Ben") has become one of the most prominent symbol of London and the United Kingdom in general, popular tourist attractions in the city and an emblem of parliamentary democracy. Big Ben is the nickname for the Great Bell of the clock at the north end of the Palace of Westminster in London, and often extended to refer to the clock and the clock tower. The tower is designed in Pugin's celebrated Gothic Revival style, and is 315 feet (96.0 m) high. Big Ben holds the second largest four-faced chiming clock in the world. The clock dials are set in an iron frame 23 feet in diameter, supporting 312 pieces of opal glass, rather like a stained-glass window.

The Elizabeth Tower, which stands at the north end of the Houses of Parliament, was completed in 1859 and the Great Clock started on 31 May. The Palace of Westminster is located in the City of Westminster on western bank of the River Thames. It is within walking distance to many popular London attractions. The closest Underground station is Westminster.

This popular tourist attractions, has become the most recognizable symbol of London. For everyone, it should be the first place on the list of the best sights to visit in the city. The Big Ben tower, with the beautiful architecture of the Victorian re-build part is worth seeing entirely on its' own merit.