The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

Where the sleeping monsters of Scotland's oil industry are left to rust.

Ancient catacombs form the foundation for this Rococo orgy of a church.

Putrefaction plateaus in Iran, where the dead were sent for decontamination before going to their final resting place.

A dangling church built over a Colombian gorge.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Museum preserving torture methods from the past.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

The largest underground church in Europe.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

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

"Purveyors of traditional sweets and vintage treats."

The curios of pharmacist and collector Henry Wellcome.

This South London cemetery holds the remains of more than 15,000 people.

A collection dedicated to the treatment of disease, held in London's oldest hospital.

A mysterious artist-run cabinet of curiosities and library.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

The anatomical-pathological collection of a man who changed surgery.