Trafalgar Square death, and the square did not open until 1844. The 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. 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
Trafalgar Square 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