City Thameslink is a railway station located in the heart of London, England. It serves as a key interchange for commuters traveling to and from the city, connecting various National Rail services. The station is situated underground, making it unique among other London stations. Opened in 1990, City Thameslink was designed to improve access to central London and facilitate travel across the Thames River. It features multiple platforms and is part of the Thameslink network, which provides services to destinations such as Brighton and Cambridge.