Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Holborn is a station of the London Underground in Holborn in London, located at the junction of High Holborn and Kingsway. Situated on the Piccadilly Line and on the Central Line, it is the only station common to the two lines, although the two lines cross each other three times elsewhere. It is in Travelcard Zone 1. It should not be confused with the closed Holborn tramway station which was part of the Kingsway tramway subway.