This centuries-old pub boasts a collection of more than 4,500 snippets of neckties from around the world.

You've probably seen these distinctive orange-tiled columns on the big screen.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The "Prussian Versailles" that is as glorious today as when it was built.

If you visit the burial place of King Frederick the Great, you'll likely find a couple of potatoes sitting on his tombstone.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

A century-old prison in the heart of Vilnius is now a lively bar, dance club, and artist residency.

Over time, this castle grew to encompass the entire island.

This magnificent Art Deco church is a reflection of Lithuania’s turbulent history.

The world's first invisible city square is an homage to a man who pushed the boundaries of art.

This medieval church is the only one in the world that features all Marc Chagall stained-glass windows.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

Baroque celebration of the end of the Great Plague of Vienna.

The world’s first interactive human body museum also serves as a chair for a giant orange man.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

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

A bridge that has seen many reiterations over its lifetime.

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

The beautiful, ornate weather station is the most popular geocache in Salzburg.

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.

Designed as a reminder of one of the darkest moments in Austrian history.

Legends surround an ancient tree trunk riddled with nails for good luck.

Op-art architecture designed for happiness.