A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

The world's largest underwater restaurant is submerged off the southern tip of Norway.

Sitting atop a rock on Michamvi Pingwe beach, this restaurant becomes its own island at high tide.

"Di amigo y entra" at this Argentinian Middle Earth-inspired pub.

When the rain falls, this drain system turns into a musical instrument.

A striking 12th-century-style castle built on the edge of a cliff.

A slice of central Asia in the middle of Berlin.

The fairy tale castle of the "fairy-tale king."

Brussels' favorite peeing boy has a sister.

Medical history with an amazing, if frighting, collection of wax diseases on display.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

Amsterdam's Red Light District leaves little to the imagination.

Debatably clever, or just plain honest hotel advertised as "The Worst Hotel in the World."

This unattributed sculpture in Amsterdam is hiding in plain sight.

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.

Museum preserving torture methods from the past.

A floating cat sanctuary on an Amsterdam canal.

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

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.