An exotic wildlife habitat right off The Strip.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

An obsolete, vanishing traffic device warns Cincinnati drivers away from middle-of-the-road obstructions.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

There aren't too many operational funiculars around, but Pittsburgh has two!

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Yo, Adrian!

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

One Confederate statue that accurately reflects the ugliness of its subject.

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

Hans Christian Andersen for the postmodern world.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

Locals call it the "Give Peas a Chance" bridge because of its distinct graffiti.

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.

The Tudor-style cottage in the middle of the square is not quite what it seems.

The castle still holds traces of the abandoned Roman fort it was built atop.

A quirky "castle" formerly belonging to a famous British inventor.