There are busy stations all over London, but here are the 7 we think you should know about:
St Pancras International for the Eurostar to Paris, trains to Gatwick and Luton airports - as well as some impressive architecture and a champagne bar.
Kings Cross Station is right next to the above, and has trains going to the north and Scotland.
Waterloo Station serves commuter trains from the home counties and the suburbs.
Victoria Station for the South and South-East of the UK, as well as Gatwick airport. Victoria Coach Station is a 5-minute walk away, with national and international buses.
Paddington Station has trains going to the West, Wales and is the terminal for the Heathrow Airport Express train.
Liverpool Street Station serves routes to the east of England and to Stansted Airport.
London Bridge Station is a major interchange for South London, and has trains to Gatwick and Luton airports.