The world’s largest collection of Tiffany glass sits in a warehouse in Queens.

The tiniest little stage in New York.

The origins of midtown Manhattan's anachronistic wooden farmhouse remain a mystery.

An abandoned subway tunnel that could have reinvigorated Staten Island still lies somewhere beneath this Brooklyn park.

The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

The Vatican of the movie industry turned into an actual church.

Long-forgotten artifacts give incredible insight into New York's most glamorous hotel.

This small New York museum celebrates the mountainous artwork of a Russian mystic.

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

The preserved house of a jazz legend still echoes with his music.

Historical figures from New York City's Catholic community reside in Midtown.

A hidden architectural treasure in New York's Brooklyn.

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

This narrow shop in the East Village hosts a matchmaking service for the new millennium.

The best place in New York to pick up the controversial, notoriously foul-smelling Asian "king of fruits."

The world's largest collection of materials relating to lesbian history is housed in a Brooklyn townhouse.

This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

Piano-making empire filled with 200-year-old steam machines still churning out 1,000 instruments a year.

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

More than 300,000 historical artifacts from the famous music venue, from Duke Ellington's handwritten score to The Beatles' booking slip.

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

Come for the pastrami, stay for the million-dollar art.