A huge musical instrument played by the ocean.

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

Where Agatha Christie mysteriously disappeared in 1926.

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

On Japan's Tashirojima Island, cats are king.

A giant bug impaled on a 75-foot-tall needle.

One of the deepest indoor swimming pools in the world.

The Devil’s own choice when he needs a drink in Brussels.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

The fantastic architectural models of a French traveler.

Strange secondhand shop showcasing taxidermy and oddies

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

The world's only museum devoted to the wonders of fluorescence.

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

Cat art as far as the eye can see.

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

Live out your childhood construction fantasies in this one-of-a-kind gyrating hotel.

A former plague hospital turned medical museum.

A beautiful maze marks where three countries meet.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

This disused VLF radio station is no longer in service but the surrounding town still bears its name.

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

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.