A reliquary of pop culture marvels, including the world's largest (and most terrifying) Jack-in-the-Box.

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

A safe place for the wild donkeys of a hot vacation destination.

From Ancient Rome to WWII, Neupfarrplatz has over 2,000 years of history underneath its main square.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A graffiti Mecca welcoming artists from around the world.

The most confusing clock in New York.

Elevated freight railway turned wildly successful urban park.

Meet some of the most prominent figures in Black history through life-sized wax models.

A museum dedicated to exhibiting remarkable outsider art.

Metro station with a claim to rock n' roll fame.

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

A collection of abandoned typographic signs from Berlin and beyond.

Cold war icon and onetime "hole" in the iron curtain.

The most visited, and possibly most controversial, museum in Germany.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The footprint of a frustrated devil in Munich's Cathedral.

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

See massive fossils that are over 200 million years old in northeastern Arizona.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

An urban laboratory.

Step inside Lucy, the world's largest "elephant."

Memorial built in 1922 in remembrance of WWI casualties.