The long forgotten Fleet River, flowing underneath London, UK.
Explore 13 abandoned stations and silent, disused platforms of the London Underground aka the Tube, including Down Street, Aldwych, Brompton Road and more.
Old storage tunnel under Clapham North underground station in London.
Tale of 2 underground cities: Stunning photographs of the subways & sewers of NYC & London CC:
The lost rivers that lie beneath London - BBC News