Trafalgar Square is a square in central London, England. With its position in the heart of London, it is a tourist attraction; and one of the most famous squares in the United Kingdom and the world. At its centre is Nelson's Column, which is guarded by four lion statues at its base. Statues and sculptures are on display in the square, including a fourth plinth displaying changing pieces of contemporary art, and it is a site of political demonstrations.

The name commemorates the Battle of Trafalgar (1805), a British naval victory of the Napoleonic Wars. The original name was to have been "King William the Fourth's Square", but George Ledwell Taylor suggested the name "Trafalgar Square".
Trafalgar Square is owned by the Queen in Right of the Crown, and managed by the Greater London Authority.[1]

Each year in December, the people of Norway send a gift of an enormous Christmas Tree to Britain, which is erected in Trafalgar Square. This is in thanks for Britain's part in their liberation during the second world war. One of the unforgettable sights of London is to see the giant tree after dark, when it is lit by hundreds of twinkling fairy lights, carol singers grouped around, while floodlights illuminate the sparkling water in the fountains of the square. This picture is depicted on many Christmas cards, sent all over the world each year.

Trafalgar Square ranks as the fourth most popular tourist attraction on Earth with more than fifteen million visitors a year.[citation needed]