After reaching dizzying heights, head down into the crypt (the largest in Western Europe) to see the impressive tombs of Lord Nelson and the Duke of Wellington, two of the biggest names in British political and military history, and artists’ corner, where JMW Turner, John Everett Millais and John Constable are buried.

One highlight is the Whispering Gallery, nearly halfway up the 528-step climb to the top of the dome, where hushed tones can be heard from the opposite side due to a quirk in its construction. St Paul’s has had a few near misses in its time, narrowly surviving the Blitz as well as a 1913 plot concocted by the Suffragettes to blow up the Bishop’s Throne. Workers have discovered 'extensive' World War II bomb damage on the tower that houses Londons famous Big Ben clock, which will force the cost of restoring it to rise by £18.6 million (24.3m). Wren’s Baroque-style cathedral was completed on Christmas Day in 1711 and has remained a national treasure ever since, playing host to the marriage of Prince Charles and Diana Spencer, a sermon read by Martin Luther King Jr and even making star appearances in the Harry Potter franchise and Mary Poppins (1964). The famous tower has four clocks one on each of its sides. Philadelphia City Hall, Philadelphia, United States The Philadelphia City Hall held the title of tallest building in the world from 1901 till 1908, with a height of 548 ft (167 m). It’s hard to miss the majestic dome of Sir Christopher Wren’s masterpiece, which dominated London’s skyline for 300 years – it was the capital’s tallest building until the BT Tower nabbed the top spot in 1965. Most Famous Clock Towers In The World: Big Ben (Elizabeth Tower), London 2.

Famous big clock in london