The first station to be known as Bank opened on 25 February 1900 when the City & South London Railway (C&SLR, now part of the Northern line) opened its extension from Borough to Moorgate. The earlier terminus of the line, King William Street, on a different tunnel alignment was closed at the same time. The C&SLR had obtained permission to demolish the 18th century church of St Mary Woolnoth on the corner of Lombard Street and build a station (originally proposed to be named "Lombard Street") on the site. After public protest, the company changed its plans to build only a sub-surface ticket hall and lift entrance in the crypt of the church. This necessitated moving the bodies elsewhere, strengthening the crypt with a steel framework and underpinning the church's foundations. The Docklands Light Railway built a tunnelled extension to platforms parallel to (but deeper than) the Northern line platforms which opened on 29 July 1991. The DLR platforms were connected at one end to the Central line and at the other to Monument station. A new link between the Waterloo & City and the Central line was excavated which uncovered part of one of the Greathead tunnelling shields used for the Waterloo and City line from 1898. This shield forms part of the new passageway, and passengers pass through when transferring between the two lines.
The original station had lifts directly to the platforms, but when escalators were later cut through the shafts, access for the mobility-impaired was lost. The only parts of the station that are fully accessible are the DLR platforms, which have lifts from the street (via the rectory of St Mary Woolnoth church). DLR trains use platforms 9 and 10. At peak times, Bank is also one of the most congested stations on the Underground, so Transport for London (TfL) is transforming it significantly, removing some bottlenecks, and improving access. The station's 15 escalators are being replaced or refurbished with a one-way system in operation in parts of the station. The station has cash machines, Euro cash machines, help points, payphones, wi-fi, toilets, escalators and lifts.
Connections: Northern, Central, Waterloo + City Lines. District, Circle Lines (Monument). London Buses routes 8, 11;15, 21, 23, 25, 26, 40, 43, 76, 133, 141, 242 and 388 and heritage route 15H and night routes N8, N11, N21, N26, N76, N133, N550 and N551.