A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

Church in Manhattan holds the bloody sock of Padre Pio, among with many other unusual relics.

A trash dump made beautiful by nature's power.

The peaceful space is adorned by paintings by the famed abstract artist Mark Rothko.

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

This tiny church near Sleepy Hollow contains Henri Matisse's last work, a rose window, and nine windows by Marc Chagall.

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

The mouldering manses of wealthy colonials still pock the streets of a Curaçao neighborhood.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

Rummage through this sunken ship, but leave your scuba gear at home.

A very classy 1920s-era bar right in Grand Central Station.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

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

A hip bar decorated with walls of golden skulls.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

New York's oldest magic store.

Tucked in the back of this amazing antique store is an important piece of medical history.

A terrific purveyor of natural history objects and curios.

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

The home of aviation trailblazers, in a remote corner of the big city.

A crumbling hospital from the 1850s on Roosevelt Island.

Lie in a hammock where George Washington stood.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.