The world's oldest map of the holy land gives us a fragmented glimpse of the layout of biblical nations.

An ancient capital city that dates back 3,000 years and harbors many surprises.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

The atmospheric road was never meant to be so creepy.

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

Northern Ireland's Brobdingnagian stepping stones.

Famously misunderstood wonder of the ancient world

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Macabre astrological automaton clock dating to the late 1400s.

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

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Week-long block party becomes a competition for the best decorated street.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Mountain where Jesus was first tempted by the Devil.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

Berlin's old airport.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Art and a pun, all in one.

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

Started as a kitchen garden, now the second largest botanical garden in the world.

An eerie, derelict amusement park in Berlin.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.