This long-distance walking route follows the Prime Meridian line as it passes through England.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

A breathtaking flower tunnel bursts with beautiful golden blossoms.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

This cramped crevasse saw the entire population of its island suffocated inside its depths.

England's most notorious suicide spot.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

A subterranean playground in an abandoned slate mine.

A unique waterfall that some believe attracts the fairfolk.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

This tangled English forest looks like something right out of a fairytale.

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The remains of Crystal Palace Great Exhibition of 1851.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The broken skateboards that became a poignant memorial to a murdered skater.

One part local history, 99 parts gruesome haunted house.

This museum tucked below a charming cafe gives a brief snapshot of photographic history.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.