It's good luck to be mocked by this monkey.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

There has been an astronomical clock on this spot since the 14th century.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

The birthplace of the builder of the Statue of Liberty is now a museum dedicated to his work.

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

If the tunes of antique organs and musical marionettes don't intoxicate you, the draft beer certainly will.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

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

This artistic fountain display pays homage to this area's theatrical history.

An extensive collection of fine art devoted to man's best friend.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

A kitschy, creepy St. Louis mainstay.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

This 19th century train workshop is a treasure trove of railroad history.

Art Deco stylings conceal the true nature of this bridge.

I Street Bridge is the heaviest swinging center bridge in the United States.

The California capital city once stood 10 feet lower than it does today.

Each summer, the migratory bats living beneath the bypass form "batnadoes" at dusk.

Special tunnels built so that frogs won't be killed when crossing the highway.

This museum boasts the ninth-largest collection of insects in North America.