Picea abies outside of its native range, and one of the most economically important coniferous species in Europe. It is used as an ornamental tree in parks and gardens. It is also widely planted for use as a Christmas tree. Every Christmas, the Norwegian capital city, Oslo, provides the cities of London (the Trafalgar Square Christmas tree), Edinburgh and Washington D.C. with a Norway spruce, which is placed at the most central square of each city. This is mainly a sign of gratitude for the aid these countries gave during the Second World War. In North America, Norway spruce is widely planted,
Trafalgar Square Day. The square is a centre of annual celebrations on New Year's Eve. It was well known for its feral pigeons until their removals in the early 21st century. Trafalgar Square is owned by the Queen 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,