Three bridges straddle a stream, one stacked upon the other.

The last occupied troglodyte dwellings in England weren't abandoned until the 1960s.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

This Manchester laundromat is hiding something.

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

Dating back almost 400 years, the oldest public collection library in the United Kingdom was once the study hall of Karl Marx.

A 19th-century time capsule of travel, fiction, and historic texts still available to the public.

A tiny, hidden alleyway dedicated to the father of meteorology.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

An abandoned canal route lies hidden under the streets of Manchester.

This crumbling folly looks like an enchanted left over from Middle Earth.

This sculpture is an instrument played by the swell of the seas.

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.

A hidden tunnel leads to an abandoned slate quarry that's now a secret swimming spot guarded by cliffs.

The remains of centuries of copper mining appear like an alien landscape.

A mysterious demonic figure peers down from its perch within the gorgeous Chester Cathedral.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

A tiny village in Wales claims the name of a noble medieval hound slain for a crime he didn't commit.

These haunting ruins belong to an ancient village that once had one hell of a view.

This neolithic stone grave has been altered and restored so often its now more neo than lithic.

Following years of secrecy, the hidden history of a World War II site is being brought to light.

The longest and tallest aqueduct in Britain can actually be sailed across.