Transport in London is a comprehensive system that includes the London Underground, buses, trains, and river services. The Tube is one of the oldest and most extensive metro systems in the world, providing quick access to various parts of the city. Buses complement the underground network, offering routes that cover areas not served by the Tube. The Docklands Light Railway (DLR) and London Overground provide additional rail services, connecting outer areas to central London. The River Thames also features ferry services, allowing for scenic travel across the city. Overall, London's transport network is designed to be efficient and accessible for residents and visitors alike.