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
Christmas tree stand The common method of illumination for these artificial Christmas trees was a floor-based "color wheel" which was placed under the tree. The color wheel featured varyingly colored segments on a clear plastic wheel, when switched on the wheel rotated and a light shone through the clear plastic casting an array of colors throughout the tree's metallic branches. Sometimes this spectacle was enhanced by a rotating Christmas tree stand. Some Christmas tree stands were uniquely designed and have value in the secondary antiques market. One example is a 1950s decorative Christmas tree stand designed by National Outfit Manufacturers Association and made