A tunnel under the River Thames constructed under the River Thames 1825-31, initially for pedestrian usage, but now used by the East London Line branch of the London Overground.
The Wikipedia article is [1] and the Historic England page is [2]
A tunnel under the River Thames constructed under the River Thames 1825-31, initially for pedestrian usage, but now used by the East London Line branch of the London Overground.
The Wikipedia article is [1] and the Historic England page is [2]