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

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

A modest stone circle in North Wales.

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

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

A ruined castle has more than its fair share of legends and ghost stories.

After years of slow decline, a derelict Gothic castle is now being restored to life.

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.

The decaying ruins of Wales' first asylum for the mentally ill.

This abandoned asylum in Wales might look haunted, but it's still beautiful.

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.

The stately remains of Llywelyn the Great's mighty fortress.

A breathtaking flower tunnel bursts with beautiful golden blossoms.

A village on the east coast of England that has almost completely eroded into the North Sea.

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

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

Eyam took steps to quarantine themselves and keep the plague from spreading.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

The biggest and deepest Cold War bunker open to the public can be found in southeast England.

This lonely cast-iron structure is the only wave-washed lighthouse of its kind left in all of Britain.

With lush plants and flowers, huge trees, ponds, and hidden monuments, this place feels a bit like discovering Narnia.

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

This shell of a historic manor house on the Isle of Wight is said to be the most haunted site on the island.