In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

Protecting the dead from opportunistic body snatchers.

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

An overgrown and largely forgotten cemetery lies hidden within the outskirts of Amsterdam.

Oldest Museum of the Netherlands is a true cabinet of curiosities.

A modern day curiosity cabinet.

A preserved building where the dead were once watched for signs of life.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

A beautifully eclectic mix of architectural styles.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Cat art as far as the eye can see.

A floating cat sanctuary on an Amsterdam canal.

Established in 1638 to battle the Black Death, this botanical garden is a treasure trove of rare flora.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

Museum preserving torture methods from the past.

A curious collection dedicated to human and animal anatomy and pathology.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

Resting place of Hollywood's immortals is also site of summer film screenings.

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