An underground city of salt.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

The “Coin Cabinet of Dresden” houses a collection of over 300,000 numismatic artifacts, one of the largest of its kind in Europe.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

This non-profit theatre in the heart of Brussels is dedicated to hosting independent films.

Cozy basement bar sports an inventory of over 2,000 beers.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

Belgium’s famous peeing statue has worn many hats (and coats, and pants), which are on display at this small museum.

Brussels' favorite peeing boy has a sister.

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

Meet the bronze beloved pet to a family of famous peeing statues.

A little sculpture with a large wardrobe.

The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

An ancient necropolis of magnificent tombs.

This 700-year-old Cyprus castle is the birthplace of the world's oldest wine, said to be toasted by Richard the Lionheart at his wedding.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

This 11th-century castle sits so low you can't see it behind the surrounding buildings.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.