Terrifying derelict military hospital once housed a recuperating Hitler.

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

"The most colorful grottoes of the world.

A striking 12th-century-style castle built on the edge of a cliff.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

On the hills of Bay Ridge stands a house straight out of a fairy tale.

In Little Caribbean, an ice-cream shop serves up regional flavors, including soursop, Irish moss, and "greatnut."

You must take the A train... to the last active cemetery in Manhattan.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

The factory for the popular Dumbo location, the Greenpoint shop is a quiet gem.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

An arcade packed with a rotating collection of unique independent video games.

“Invented in Key West, Perfected in Brooklyn."

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Sniff the Titan Arum's rotting flesh.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.