A wonderful safe haven founded in the 1960s to rescue endangered monkeys from the pet trade.

Britain's oldest and biggest hole in the ground.

These picturesque ruins crumble beautifully into the ocean.

Grab a cuppa at England's first and only domestic tea plantation.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

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

Saintly bones pressed into a wax effigy of a Catholic superstar.

The recovered bones of martyrs slaughtered during The Terror are on display in this church crypt.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

The largest medical and anatomical collection in France lies hidden from the public.

This museum houses an imposing skeleton army comprised of creatures great and small.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

Abandoned railway line circling the city of Paris.

France's most famous cemetery, with some of its most curious tombs.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

This Scottish burial tomb once held hundreds of ancient eagle bones.

This tiny island featuring 9th-century Viking ruins is only accessible at low tide.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

This allegedly haunted 16th-century tower house-turned-museum exhibits thousands of spectacular objects.

The 16th-century church has the only stained glass windows that survived the Scottish Reformation intact.

Protecting the dead from opportunistic body snatchers.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

This series of Scottish caves has no clear purpose other than baffling historians.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.