A gorge full of caverns where early humans lived alongside cave hyenas, giant mammoths and wooly rhinoceroses.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

This unchanged Victorian park is rumored to have been the inspiration behind Peter Pan's Neverland.

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.

Local legends say that fairies used to dance in the moonlight here and invite handsome young men into their grottoes.

Tombstones and enigmatic inscriptions hide within a vault beneath a popular London arts venue.

The secret wartime bunker built on the platforms of an abandoned Tube station.

This former abandoned hospital, a complex of stunning 19th century buildings, once housed 2,000 psychiatric patients.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

This tiny little pool is said to be home to a malicious mermaid named Jenny Greenteeth.

This magical museum celebrates the life and work of a seminal children's book writer (and occasional spy).

Human-made caves excavated to hide a secret society of wealthy pagans.

Cliffs full of fossils at the portal to England's Jurassic Coast.

This romantic, decaying 13th-century ruin on the edge of Sherwood Forest is reputedly one of England's most haunted places.

An English artist has turned an unassuming ex-council house into a time-lost house of mystery.

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

An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

Grab a cuppa at England's first and only domestic tea plantation.

Follow the original medieval paths that wind through this intriguing section of the city.

Harry Potter once visited this massive limestone cliff, which was carved by an ancient glacial river.

A house of bones — but nobody is quite sure to whom they belong.