A historic cave in Scotland once served as a hiding place for a famous Covenanter.

The legend says that this English rock formation was once a hunter who was turned to stone by annoyed witches.

Henry VIII's forgotten castle was built by the gunpowder-obsessed king to be defended solely by cannons.

These ancient sea caves hold Britain's highest concentration of Pictish rock carvings.

The alleged birthplace of Lady Jane Grey, who was executed at age 16 for claiming the throne of England.

There's a strange stone hoodoo towering atop a wooded hillside and no one is quite sure how it got there.

Abandoned boats decaying in the largest ship graveyard in mainland Britain.

A little-known ruin with a convoluted history and a fascinating latrine drainage system.

A stretch of land where the sour-sweet vegetable is cloaked in darkness and grows so fast you can hear it crack, squeak, and pop.

An abandoned 18th century manse looks like something out of an Indiana Jones movie.

England's steepest street has such a drastic incline that locals tie their parked cars to lampposts when it gets icy.

A modest stone circle in North Wales.

A brick foundation and piles of listing building materials are all that remains of this World War II POW camp.

This surreal art house looks like a geometric version of a small chapel.

This chain of artificial lakes was an ideal test ground for the aircraft that would carry the "bouncing bombs" used by the WWII "Dambusters" squad.

One fisherman has used his love of pebbles and shore to create a crazy garden of rocky art.

This ruined 15th-century hermitage is steeped in myth and mystery.

This grave resides at the crossroad of three parishes.

Legends say that this small island was the final resting place of the Welsh saint of lovers.

These Roman ruins in England’s Lake District are 2,000 years old, but look pretty good for their age.

This ruined folly was originally built to honor a failed American state that would have become "Westsylvania."

The world's largest grapevine has produced a delicious harvest at Hampton Court Palace for almost 250 years.

This gnarled old tree supposedly sprouted from seeds kept in the pocket of a 16th-century Spanish sailor.

The "Bridge Over the Atlantic" lets you cross the waterway in mere seconds.