A young woman's senseless murder led to the controversial psychological theory of the "bystander effect."

The oldest Dutch colonial stone house in New York City is a hidden gem on the border of Brooklyn and Queens.

This mysterious marker puzzles pedestrians and infuriates geographers.

Where the four original members of the Ramones hung out and revolutionized punk rock.

Offbeat arts organization that hosts exhibitions, events, and explorations.

The preserved house of a jazz legend still echoes with his music.

Piano-making empire filled with 200-year-old steam machines still churning out 1,000 instruments a year.

One of the oldest Jewish cemeteries in the city, it is now overgrown with an urban forest.

A uniquely lettered street sign marks the corner where the iconic word game was invented.

Holding the most bodies of any cemetery in the United States.

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

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

An exhibition space dedicated to American outsider art created between the 18th and 21st centuries.

The graveyard holds the remains of Irish immigrants who arrived in Queens after fleeing the Great Famine.

A collaborative art project that transformed a neighborhood in NYC's Queens.

This outdoor gallery of sculptures along the East River was once a landfill.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

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

This interactive gallery makes you feel like you've stepped into a fantasy world filled with whimsical monsters.

Check out the underground party scene at the "Burning Man of Brooklyn."

An annual extravaganza of Broadway theater memorabilia.