Wisconsin's most celebrated export gets the royal treatment on I-94.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

A bizarre house filled with an astounding array of collections.

A group of artists transformed this desolate city alleyway into an outdoor gallery of street art.

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.

A wonderfully curated used bookstore in an airport.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

This enormous 32-foot painting depicts Poland's greatest medieval battle in glorious detail.

A delightful museum entirely dedicated to the tiny homes of dolls.

A brush maker used his factory to protect blind Jews from the Gestapo.

Tiny memorials honor individual victims of the Holocaust.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This classic restaurant features a gorgeous mirror-clad room.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

Special benches that play Chopin's music are scattered throughout his native city.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

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

At first glance, this area seems like just another city park, but the lush landscape hides a dark past.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

Robots, lasers, and whoopee cushions, oh my!

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.