Ludgate Circus is a road junction in the City of London where Farringdon Street and New Bridge Street (together forming part of the A201 road) cross Fleet Street and Ludgate Hill (which rises up to St Paul's Cathedral).
Historically the main connection between the City of London and the City of Westminster, Ludgate Circus is situated on the course of the River Fleet, London's largest subterranean river. The circle of Ludgate Circus was constructed between 1864 and 1875 using Haytor granite from Dartmoor in Devon transported via the unique Haytor Granite Tramway.
In Charles Dickens' Dictionary of London (1879) the area was described as "Farringdon-circus".(Wikipedia)