These haunting ruins belong to an ancient village that once had one hell of a view.

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

The curious and tiny collection contains some very odd objects.

Although it appears ancient and mysterious, the quirky folly was actually built 200 years ago by an eccentric estate owner.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

This enchanting hill is home to fairy lore and a sinister local mystery.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

The strange behavior of a tween led to allegations of witchcraft and a curse being placed on anybody within earshot.

A midnight snack that lights up the night.

An 18th century monument regularly tagged with unsettling graffiti referencing a 1940s unsolved murder.

This macabre monument atop an ancient well gives a nod to a brutal episode in Scottish clan history.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

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

This observatory within Europe's first dark sky park offers stunning views of the night sky.

A Roman spa buried deep beneath the City of London.

These lovely Turkish-styled baths were brought back to life after winning a reality show competition.

The Stonehenge of Wales is one of the grandest neolithic dolmens still in existence.

Protecting the dead from opportunistic body snatchers.

Puzzles within puzzles hide a golden treasure in this hedge maze.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

Legend says this cave housed a 16th-century cannibal and his family of 48.

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

This romantic, decaying 13th-century ruin on the edge of Sherwood Forest is reputedly one of England's most haunted places.

A curious collection of mechanical moving figures.