In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

A Manhattan Episcopal church with an eerie underground crypt.

Salute the leader of the proletariat.

There must be a pun in this haystack somewhere...

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

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

Come for the waffles, stay for more waffles.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

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

A staggering collection of photographs depicting medical, social, and historical change.

Here, exhibits come with a side of edible history.

This speakeasy continues the Prohibition-era legacy of Harlem's jazzy Swing Street.

A beautiful collection of architectural ornaments rescued from demolished New York City buildings.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

One of only two remaining Victorian-era greenhouses in New York.

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

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

A whimsical, but often overlooked clock in Park Avenue.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

Walk into the 19th century without leaving Brooklyn.

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

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

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