A dilapidated psychiatric facility on the outskirts of Milan where electroconvulsive therapy was developed and Napoleon once lived.

Venice's "Island of the Mad."

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

A giant snail sculpture looking longingly at the German traffic museum.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

American soldiers discovered Europe's best one-liner at the end of World War II.

Where the lovelorn find a home for their sentimental keepsakes.

At this exhibit on the world of poison, venomous animals steal the show.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

Amidst medieval and baroque buildings, five human-sized gherkins stand tall.

The medieval network of canals hidden underneath the city is opened to explorers each year.

A small marionette collection located within the dark cellars of an 11th-century Austrian castle.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

The resting place for anonymous victims of the Danube's dark waters.

Op-art architecture designed for happiness.

This former insane asylum now holds a pathological anatomy museum.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Journey through a mesmerizing array of board games inside this museum.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

Inside the corridors of this flea market, visitors are sure to find some obscure and odd treasures.

Ride a dragon train into a world of dwarves.

This series of underground chambers contains Europe's largest subterranean lake that is slowly drained each day.