A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

The walls of the iconic dome are hollow and have a secret stairway.

There’s a hidden military meme engraved on the World War II Memorial.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

A 30-foot-high stream of chocolate flows continuously at the Lindt Home of Chocolate.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

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

Nondescript elevator doors open to reveal a stunning, surreal world.

A celebration of capitalism in Midtown.

Become a prohibition rebel.

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

The "Seinfeld" diner.

Sniff the Titan Arum's rotting flesh.

More gold than anywhere else, ever.

New York City's smallest piece of private property.

Try not to get slimed in Tribeca.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.