Trafalgar Square of Trafalgar. Surrounding the square are the National Gallery on the north side and St Martin-in-the-Fields Church to the east. Also on the east is South Africa House, and facing it across the square is Canada House. To the south west is The Mall, which leads towards Buckingham Palace via Admiralty Arch, while Whitehall is to the south and the Strand to the east. Charing Cross Road passes between the National Gallery and the church. London Underground's Charing Cross station on the Northern and Bakerloo lines has an exit in the square. The lines had separate stations, of which the
Trafalgar Square Horse Guard's Parade, along Whitehall to Nelson's Column. As an archetypal London location, Trafalgar Square featured in film and television productions during the Swinging London era of the late 1960s, including "The Avengers", "Casino Royale", "Doctor Who", and "The Ipcress File". It was used for filming several sketches and a cartoon backdrop in the BBC comedy series "Monty Python's Flying Circus". In May 2007, the square was grassed over with 2,000 square metres of turf for two days in a campaign by London authorities to promote "green spaces" in the city. In July 2011, due to building works in Leicester