The smallest island in Manhattan is a manmade landfill dominated by a Buddhist peace arch.

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

The iconic Manhattan corner that was once the site of the Beastie Boys' fake clothing store.

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

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

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

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

Mysterious 500-year-old tapestries depict a unicorn hunt.

The first and only carousel with a lineup entirely of insects.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

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

Guerilla gardeners reclaimed this abandoned railroad land literally putting down roots.

A whimsical, but often overlooked clock in Park Avenue.

An artist's cute bronze subway sculptures belie his violent artistic past.

A quiet and contemplative oasis in the middle of New York's bustle and riot.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

Reverend Jen's unique museum/living room showcases her troll collection.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

This vacant church in the Financial District was once the heart of New York's first Syrian immigrant community.