A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

All that remains of the once-booming chain is a single orange-roofed restaurant.

Failed state-supported institution meant to rehabilitate students with intellectual disabilities.

The oldest continuously inhabited street in America.

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

This throwback amusement park is home to rides and unique storybook figures from the past.

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

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

"A hideous albatross in the Hudson River Valley."

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

There must be a pun in this haystack somewhere...

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Unrepaired walls from a 1920 anarchist bomb attack.

The site of a tragic massacre that spawned a multimedia franchise.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

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

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

Visit the monolithic tomb of America's most famous general.

An artist's cute bronze subway sculptures belie his violent artistic past.

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.