Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

A museum filled with tiny, adorable versions of the mighty Royal Danish Navy.

Museum on earth sciences featuring a recreation of a famous curiosity cabinet.

Strange secondhand shop showcasing taxidermy and oddies

An old town theater converted into a celebration of the hobo legacy.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

A gender-bending antihero's grave, where lies the inspiration for both book and film.

Home to the world's oldest functioning orrery.

These curious caverns have been home to mushrooms, gangsters, and disco.

A Perpetually Under construction Park.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

The place where houses are born.

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

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

Museum preserving torture methods from the past.

A towering baroque basilica jutting out of the French countryside.

One of the largest burial mounds in the Netherlands and Belgium.

A beautiful maze marks where three countries meet.

A taxus-tree to which Julius Caesar reputedly tied his horse.

Peek through a transparent pyramid and drink in the mountain made of books.

A moving memorial to the fallen and missing from WWI trenches.

Incredible labyrinth of man made caves.

Museum covers every step of the chocolate-making process, from cultivation to the finished product.