Amid skyscrapers and traffic exists this unique aquatic ecosystem.

Set sail on a small scale.

Hear the tales of New York's most notorious criminals.

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

Lie in a hammock where George Washington stood.

Gang fights don't just happen on the streets, they happen under them too.

Once thought to be the fabled Holy Grail, it is now known to be an oil lamp.

A cruise terminal that changes the atmosphere of Red Hook's industrial waterfront.

The greatest real estate coup of all time.

A Yiddish theater turned movie house turned rock and roll landmark turned gay disco turned bank.

The place where Dvořák composed some of his most famous works.

An institution dedicated to the towering buildings that make up skylines in New York City and around the world.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

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

Collapsing castle on the Hudson river was once the storage site of military surplus business.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Walking around West Harlem reveals a scavenger hunt of beautiful bird murals.

A Manhattan Episcopal church with an eerie underground crypt.

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

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

Little Red Lighthouse under the George Washington Bridge.

The highest point on the island known for buildings that touch the sky.

The mummified relics of an American missionary.