This clifftop arch is a natural stunner.

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

This beautiful 19th-century temple stands atop the ruins of its predecessor.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

A historic observatory precariously perched at the "Top of Europe."

The bears of Bern have been a city highlight for over 500 years.

A museum that chronicles the history of the Nuremberg Trials for Nazi war criminals in the building where the trials were once held.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

A 30-foot-high stream of chocolate flows continuously at the Lindt Home of Chocolate.

A Swiss amusement park entirely dedicated to the theory of ancient astronauts.

Visit Europe's largest subterranean waterfall, carved by water from the glaciers of the towering peaks surrounding the valley.

The second-highest train station in Europe.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

During World War II, the Nazis repurposed this beer cellar to store stolen artwork.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

The prototype for all Nazi concentration camps.

This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

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

A unique bridge with an equally unique view.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

Liechtenstein's royal family calls this medieval alpine castle home.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.