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

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

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

The oldest living tree in Manhattan comes shrouded in sinister legend.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

A living archive of urban activism and space reclaimed.

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

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

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

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

Nondescript elevator doors open to reveal a stunning, surreal world.

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

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

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

Ride the subways of yesteryear.

Read a book next to a Midtown waterfall.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

A hands-on traveling collection of the innovative devices of yesteryear.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.