The biggest solar telescope in the world helps reveal the secrets of our sun.

This floating cinema brings new meaning to the phrase "going out" to the movies.

A hip bar decorated with walls of golden skulls.

The Origin of On the Origin of Species.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

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

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

These Nubian pyramids are strange and unique, even by pyramid standards.

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

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

A spooky and decrepit mental health facility is slowly being replaced with newer digs.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

A tiny survivor of the Donner Party disaster.

This Italian church is as beautiful as it is common, except for the real skulls decorating the many mannequins inside.

Underground hospital complex constructed by slave laborers during the German occupation of the Channel Islands.

An abandoned asylum incorporated into a college campus.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

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

A formerly abandoned mental institute, now back in business.

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

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.