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

Relics given to a Manhattan church to avoid seizure by the Italian government.

The saddest little diner in New York.

19th century cemetery hidden in Brooklyn's Prospect Park.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

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

New York's unstoppable progress turned this cemetery into the smallest burial ground in the city.

The remains of a 19th century spring, and the site of an infamous unsolved murder.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The origins of midtown Manhattan's anachronistic wooden farmhouse remain a mystery.

Unlock the secrets of the conjuring arts.

New York's oldest magic store.

NYC's legendary underground network for bovine transportation.

Townhouse facade doubles as an RMS Titanic Memorial.

A crumbling hospital from the 1850s on Roosevelt Island.

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.

Legendary private island in the Bronx...devoid of rats.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

From scholastic to sepulchral - now under reconstruction.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

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

Waterway populated with abandoned projects, including a submarine.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.