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 proposed budget cuts. During the night the situation turned violent as the escalation by riot police and protesters damaged portions of the square. In November 2015 a vigil against the terrorist attacks in Paris was held. Crowds sang the French national anthem, "La Marseillaise", and held banners in support of the city and country. Every year on the anniversary of the Battle of Trafalgar (), the Sea Cadet Corps holds a parade in honour of Admiral Lord Nelson and the British victory over the combined fleets of Spain and France at Trafalgar. The Royal British Legion holds a Silence in