Clifton Rocks Railway
Trace the road that runs along the River Avon and you’ll spot the entrance of this abandoned subterranean funicular tunnel built by entrepreneur George Newnes in 1893 as part of a plan to link his hilltop Clifton Spa with the port below. Its working days were short-lived; by the 1920s cars had made it redundant – that was until the Second World War, when locals took refuge from bombs in the tunnels and the BBC set up an emergency studio in its lower chamber. Since restoration work began in 2008, the site often opens for tours. Check online.
1 Sion Hill, BS8 4DQ