London Bridge is a central London railway terminus and connected London Underground station in Southwark, south-east London. It occupies a large area on three levels immediately south-east of London Bridge, from which it takes its name. The main line station is the oldest railway station in London fare zone 1 and one of the oldest in the world having opened in 1836. It is one of two main line termini in London to the south of the River Thames (the other being Waterloo) and is the fourth-busiest station in London, handling over 50 million customers a year.