The main geographical feature of the city is the River Thames, which meanders through central London, dividing it into northern and southern halves. The central area and the greatest number of important sights, theatres and restaurants are within the Underground's Circle Line on the north bank of the river. In the past decade, however, the south bank of the river has been transformed into one of London's must-see district, with attractions such as Borough Market, the London Eye, Shakespeare's Globe theatre and the Tate Modern art gallery. The tourist-ridden West End includes Soho, Trafalgar Square, Piccadilly Circus, Leicester Square and Regent St. The East End, so beloved of Ealing comedies, lies east of the Circle Line; it used to be the exclusive preserve of the Cockney but is now a cultural melting pot. There are interesting inner-city suburbs in North London, including Islington and Camden Town, with leafy Hampstead further north. Further south, London includes a mix of poor, dirty, graffiti-ridden suburbs, and increasingly gentrifying areas like Clapham and, to an extent Brixton.