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

Believed to be an execution site used by King Arthur after he was embarrassed.

A museum dedicated to Wales’ favorite—and strangest-looking—watercraft.

This tall stone wall with no door and ill-matched windows was built centuries ago, and used as a shelter for domesticated pigeons.

Legend has it that this stone moves down to the river sometimes to have a drink.

Neolithic burial chambers hidden beside a village school.

This mysterious wheel-cross is the tallest in Britain.

A turn-of-the-century prophecy comes true when a mischievous wooden Devil watches the neighboring church burn to the ground

The worst flood disaster in Welsh history might have been a lot worse if it had not happened on movie night.

Eerily lifelike effigies stare at everyone who enters this sanctuary.

Go deep down into the earth to experience the world of Welsh coal miners.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

A spiral staircase connects the limestone cave with Pembroke Castle, birthplace of King Henry VII.

The world’s only museum dedicated to baked beans.