A bright little alley in La Boca is a part of tango history.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

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

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

A whimsical art tower at a Bavarian brewery includes a grotto for its mythical beer-brewing dwarves.

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

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

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

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

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.

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

An abandoned NSA listening post on Berlin's "Devil's Mountain."

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

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

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

A massive volcanic plug is now a protected area that hosts a number of bird species.

Nature's biggest mammal swims in landlocked Oklahoma.

Mysterious meeting place for UFO hunters near Area 51.