This sprawling Jewish cemetery is one of the largest in Europe.

Berlin's old airport.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

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

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

Vietnam's feral abandoned water park offers access to a post-apocalyptic funscape, now with fewer crocodiles.

This tiered waterfall is so pretty it may cause visitors to cry tears of their own.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.