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
White House Christmas tree in 1997 there were 36, in 2008 there were 27. Traditionally, the tree in the Blue Room is the official White House Christmas tree. The White House Christmas tree usually stands nearly 20 feet tall and the crystal chandelier in the Blue Room must be removed for the tree to fit the room. Frequently, the tree's height is reported as 18 or 18½ feet tall. The Blue Room tree is donated each year by the National Christmas Tree Association (NCTA). The NCTA has donated the tree since 1966; it is chosen through a contest among members of the trade group.