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

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

These mysterious religious carvings were once thought to be thousands of years old but are actually the work of modern eccentric.

A mysterious ruin shrouded in more folklore than fact.

A quartet of rusting satellite goliaths are all that remain of a communication network that protected Britain from German and Russian air strikes.

Britain’s longest ancient monument, this great 8th century earthwork was built to mark the boundary between what would become England and Wales.

This unusual rock looks like a giant, otherworldly mushroom sprouting atop a cave.

One of the largest megalithic complexes in England, which local legend holds is a wedding party turned to stone by the Devil.

A labyrinthine underworld of tunnels and caverns hides beneath the city.

The 5,000-year-old megalith is believed to be Scotland's tallest standing stone.

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

Part museum, part piece of Arthurian-inspired history, this stately hall attracts King Arthur fans from miles away.

Gothic tower where Lord Alfred Tennyson wrote the poem "The Sleeping Beauty."

This 2,000-year-old tree inspired the nursery rhyme "Rock-a-bye Baby."

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.

A mysterious crater-like pond has a spooky tendency to empty and fill with complete disregard to rainfall patterns.

This mysterious hilltop collection of Druid carvings isn't quite what it seems.

It's possible to walk inside one of the largest Neolithic tombs in Britain.

A headstone notes where the most famous of Robin Hood's legendary Merry Men is reportedly buried.

A group of glacial erratic boulders are improbably balanced on white limestone pedestals.

This volcanic plug boasts the longest recorded history of any Scottish stronghold.

The abandoned fishing village was swept right into the sea.

The dramatic remains of an abandoned farmhouse sit high on the edge of a remote hillside.

6000-year-old site covered in more than 50 megaliths.