Goethe's "Faust" was inspired by these rock formations known as the "Devil's Pulpit" and "Witches' Altar."

Largest illuminated advertisement sign in the world.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

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

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

Go surfing on this urban wave, "hacked" by local surfers.

The prototype for all Nazi concentration camps.

Europe’s oldest natural human mummy.

This strange geological landscape erupts with sudden bursts of water.

A glacier pocked with ice caves and surrounded by rainforests.

France's most famous cemetery, with some of its most curious tombs.

Romania's only crater lake with water as pure as if distilled.

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

Protecting the dead from opportunistic body snatchers.

Quite simply the largest tree in the world (by volume).

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Deadly scalding and one of the largest hot springs in the world.

Berlin's old airport.

Super-heavy Nazi architectural experiment.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Mysterious man-made rock piles form an ancient cemetery on this rocky beach in Norway.

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