A open air theatre built on a cliff by an eccentric British woman.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

This modern labyrinth lies in the shadow of a ruined medieval castle.

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.

A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

A remarkably well preserved tower dating all the way back to the Iron Age.

Ruined castle with subterranean vaulted Goblin Ha' or "Goblin Hall."

An abandoned tank sits in an empty London lot as a symbolic middle finger to local city planners.

A glacial pothole was once a hideout for a notorious Scottish outlaw.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

This foolish Victorian sea fort was converted to a deluxe hotel.

The forest that inspired Winnie-the-Pooh's Hundred Acre Wood can be found outside London.

Public access to clean drinking water was an instant hit among the masses.

A familiar otherworldly creature guards this 12th-century Scottish abbey.

The mystery of this small, brick pond eluded its possibly only investigator until his death.

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

This haunting stone chasm is a hotbed of mossy rock and English legend.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

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

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.