Trafalgar Square Authority in conjunction with the charity Unicef, who began ticketing the event to control crowd numbers. A Christmas ceremony has been held in the square every year since 1947. A Norway spruce (or sometimes a fir) is presented by Norway's capital city, Oslo as London's Christmas tree, a token of gratitude for Britain's support during World War II. (Besides war-time support, Norway's Prince Olav and the country's government lived in exile in London throughout the war.) The Christmas tree is decorated with lights that are switched on at a seasonal ceremony. It is usually held twelve days before Christmas Day.
Lisbon Christmas tree Lisbon Christmas tree The Lisbon Christmas tree is an Artificial Christmas tree erected annually in Lisbon, Portugal since 2004. From 2005, when it was an entrant in the Guinness World Records, the tree is called the "Europe's tallest Christmas tree". The height of the tree varies every year and it was the highest in 2007 at . The tree was erected for the first time in Lisbon in 2004 in the Comercio Square. In 2007 it left the Portuguese capital for Porto the country’s second largest city. In 2008 it returned to Lisbon but to the Edward VII Park. In