Vincent Square is in the London area of SW1. SW1: The SW1 postcode district covers most of Westminster and is split into eight different sub-sections, each with an additional letter tagged on the end. SW1 covers some of central London's most famous landmarks, including Buckingham Palace, the Houses of Parliament and St James's Park. The boundaries sweep along the Thames from Whitehall to Pimlico, around to Sloane Square and the start of the Kings Road, and then up towards plush Belgravia, the Queen's residence and beyond. The area of Westminster is dominated by the business of government, and the great symbols of British greatness. The Houses of Parliament, with its mighty bell Big Ben, can be heard throughout Central London chiming the hours, while at the top of Whitehall, Trafalgar Square and Nelson's Column are considered the heart of the nation. The National Gallery is the repository of Britain's best international art collection while Tate Britain, in the attractive riverside area of Millbank, has the best permanent exhibition of British Art in the world.