Trafalgar Square is one of the most popular tourist attractions on earth with more than fifteen million visitors a year.
It was designed by Sir Charles Barry, who was also responsible for the Houses of Parliament. Building started in 1840 and finished five years later.
Nelson's Column is also located here to celebrate the life and victories of one of Britain's greatest naval leaders.
As well as being surrounded by some of London's most important art venues - the National Portrait Gallery and the National Gallery - it is also home to the Fourth Plinth in Trafalgar Square.
'Nelson's Ship in a Bottle', by leading Anglo-Nigerian artist Yinka Shonibare MBE, is the latest artwork to adorn the plinth.
Copyright BBC London. Image courtesy of Camvista.com