Trafalgar Square through the years

Trafalgar Square  is a public square in the City of Westminster, Central London, established in the early 19th century around the area formerly known as Charing Cross. The square's name commemorates the Battle of Trafalgar, the British naval victory in the Napoleonic Wars over France and Spain that took place on 21 October 1805 off the coast of Cape Trafalgar.

The site around Trafalgar Square has been a significant landmark since the 1200s. For centuries, distances measured from Charing Cross have served as location markers.The site of the present square formerly contained the elaborately designed, enclosed courtyard, King's Mews. After George IV moved the mews to Buckingham Palace, the area was redeveloped by John Nash, but progress was slow after his death, and the square did not open until 1844. The 169-foot (52 m) Nelson's Column at its centre is guarded by four lion statues. A number of commemorative statues and sculptures occupy the square, but the Fourth Plinth, left empty since 1840, has been host to contemporary art since 1999. Prominent buildings facing the square include the National Gallery, St Martin-in-the-Fields, Canada House, and South Africa House.

The square has been used for community gatherings and political demonstrations, including Bloody Sunday in 1887, the culmination of the first Aldermaston March, anti-war protests, and campaigns against climate change. A Christmas tree has been donated to the square by Norway since 1947 and is erected for twelve days before and after Christmas Day. The square is a centre of annual celebrations on New Year's Eve. It was well known for its feral pigeons until their removal in the early 21st century.

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Trafalgar Square is owned by the King in Right of the Crown and managed by the Greater London Authority, while Westminster City Council owns the roads around the square, including the pedestrianised area of the North Terrace. The square contains a large central area with roadways on three sides and a terrace to the north, in front of the National Gallery. The roads around the square form part of the A4, a major road running west of the City of London. Originally having roadways on all four sides, traffic travelled in both directions around the square until a one-way clockwise gyratory system was introduced on 26 April 1926. Works completed in 2003 reduced the width of the roads and closed the northern side to traffic.

Nelson's Column is in the centre of the square, flanked by fountains designed by Sir Edwin Lutyens between 1937 and 1939(replacements for two of Peterhead granite, now in Canada) and guarded by four monumental bronze lions sculpted by Sir Edwin Landseer.At the top of the column is a statue of Horatio Nelson, who commanded the British Navy at the Battle of Trafalgar.

Surrounding the square are the National Gallery on the north side and St Martin-in-the-Fields Church to the east.Also on the east is South Africa House, and facing it across the square is Canada House. To the south west is The Mall, which leads towards Buckingham Palace via Admiralty Arch, while Whitehall is to the south and the Strand to the east. Charing Cross Road passes between the National Gallery and the church.

London Underground's Charing Cross station on the Northern and Bakerloo lines has an exit in the square. The lines had separate stations, of which the Bakerloo line one was called Trafalgar Square until they were linked and renamed in 1979 as part of the construction of the Jubilee line, which was rerouted to Westminster in 1999. Other nearby tube stations are Embankment connecting the District, Circle, Northern and Bakerloo lines, and Leicester Square on the Northern and Piccadilly lines.

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