This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

A huge Megalithic chamber tomb located behind a cafe.

This monument to one of the largest science fiction games of all time bears the names of hundreds of thousands of players.

Staves, storm-calling, and of course, necropants.

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

The 10,000 Torii shrine.

The quintessential Japanese rock garden has existed for more than 500 years.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

This little replica of Lady Liberty provides a bit of NYC in a Japanese city.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

The original "capsule building" is a masterpiece of Metabolist architecture.

An ordinary pond with fish from out of this world.

Try not to get slimed in Tribeca.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

An accidentally hidden library containing the ephemeral history of New York.

This grave resides at the crossroad of three parishes.

The largest greenhouse in the world is home to over one million types of plants.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Countless grotesque faces stare out from this eerie Prague art wall.

Macabre astrological automaton clock dating to the late 1400s.