The site of a legendary 14th-century battle and a controversial 20th-century speech.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

Rare moles meet activism at this Oaxacan eatery.

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

Phil Mortillaro uses keys to bring art back to the Village.

Love is in the air along the small street in Brooklyn.

This innocent-looking townhome is actually a subway exit.

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

Ride the subways of yesteryear.

Brooklyn's most iconic restaurant, resurrected.

Every dish is blessed in this basement eatery beneath a Hare Krishna temple.

Grand architectural relics gain a new life in this Pennsylvania warehouse.

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

A unique work of art that was created without permission.

For over 80 years, Mayan ruins stood proudly in a most unlikely location.

The Hudson River School comes alive at this palatial estate.

A small Second Empire-style building is one of only seven remaining lighthouses on the Hudson River.

A massive sustainable farm designed by the mastermind behind Central Park.

A giant toy jack made of numerous welded-together fire hydrants.

A New York warehouse filled with an enormous amount of goods saved from the landfills and donated for creative use.

A self-made museum in Queens, New York continues to display the work of a sculptor known for paving his own way.

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

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

A New York garbage depot holds a secret collection of weird and wonderful refuse.