100 massive sculptures in the Hudson River Valley.

Home of Philip Johnson, one of the 20th century's most influential architects.

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

Surrounded by low rise buildings and partially converted into an auto body shop, this marble archway is the only vestige of a forgotten Manhattan estate.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

A celebration of capitalism in Midtown.

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

A field in which God and his son Jesus purportedly appeared to a young farm boy named Joseph Smith.

Wine bottle sculpture with a ship's stateroom inside.

Historic Greenpoint theater, turned roller disco, now housing a chain pharmacy store.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

NYC's legendary underground network for bovine transportation.

Plot your trip through the city on the sidewalk.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

A tiny islet just off Long Island offers a wealth of infectious curiosities.

Headquarters of the world's fourth largest Hasidic sect and the first of many "770s" around the world.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

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

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Discover the taste of mold.

This innocent-looking townhome is actually a subway exit.

A dilapidated dock tells the story of Titanic's missed arrival.

A curious friendship between two inanimate ladies.

A Victorian mansion, painstakingly reproduced to appear just as the the Munster's family home did on TV.