Kennington Oval Railway Station

Now called Kennington station. On the London Underground Northern Line.
The station was opened in 1890 as part of the world's first underground electric railway - the City of London and Southwark Subway Co. Its surface building remains largely unaltered, although the hydraulic lifts have been replaced by electric lifts.
In the 1920s, the underground parts of the station were reconstructed so that the line could be extended and larger trains could be used. Two additional platforms and later several cross passages were provided for interchanges between the branches.
See Wikipedia entry.