A fiery crater has been burning in the Karakum Desert since 1971.

A brutalist gem towering over the heart of Milan.

This tiny 1930s Art Deco airport is a beautiful remnant of a bygone era.

This ruined folly was originally built to honor a failed American state that would have become "Westsylvania."

Berlin's oldest surviving academic architecture hosted decades of animal dissections.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

Concerts, art, offices, and a café in what used to be Berlin's first crematorium.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

An Iron Age hillfort rooted in Arthurian legend was made famous by musician Peter Gabriel.

One of the largest megalithic complexes in England, which local legend holds is a wedding party turned to stone by the Devil.

Pyramid shaped monument with a tall tale attached.

The tower was originally used as a chimney for the waste incinerator of St. John's Precinct and Market.

This abandoned limestone quarry now provides visitors with multiple, breathtaking viewpoints.

The 1852 novel "Uncle Tom's Cabin" lends its name to a subway station, a street, and several shops on the edge of Berlin.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

Berlin's old airport.

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

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

One of Bristol's best-hidden gems has ties to Lord Byron, whence it became the nation's first reformatory school for girls.

The second largest surviving chained library is housed in this 12th century church.

In 1943 the British military took control of this village, telling residents they had to leave temporarily. The villagers were never allowed to return.

This tiny town features a tiny town that acts as a 3D snapshot of the town during the 1950's.

Giant naked man on a hillside.