Trafalgar Square, a popular tourist destination, is a public square in the City of Westminster, Central London. Trafalgar Square was designed by architect John Nash in the 1820s and constructed in the 1830s. Tourists gather there, tour buses circle the central monument and political activists gather to demonstrate. Every December, Norway donates a marvelous Christmas tree to thank Britain for their part in the liberation from the Nazis and it is erected in the square. Trafalgar Square itself has many interesting sights including Nelson's Column, The National Gallery, and St. Martin-in-the-Fields.