A way to take your secrets to someone else's grave.

A no-frills cinephile haven known for showing offbeat, underseen films.

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

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

“Invented in Key West, Perfected in Brooklyn."

A famous songsmith's custom piano, dubbed "High Society," is hidden just out of sight in one of New York's finest hotels.

Nikola Tesla's former home contains an homage hidden from plain sight.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

More gold than anywhere else, ever.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

An exhibition space dedicated to American outsider art created between the 18th and 21st centuries.

Set sail on a small scale.

Underground vaults of a former brewery beneath Brooklyn's Crown Heights are now used to ripen cheese.

This small and serene place for quiet reflection on Staten Island was built in China based on the gardens of the Ming Dynasty.

This abandoned caretaker's apartment is one of 13 left in the New York Public Library system.

A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

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."

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

The loneliest island in New York.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

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