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

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

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

Detailed facade of a brownstone in Boerum Hill.

A B.Y.O.B. Mexican cantina lives inside one of the last tortilla factories in Brooklyn.

“Invented in Key West, Perfected in Brooklyn."

Red frames showcase remnants of one of New York's original subway stations.

Con Edison’s exotic and heat-loving pests.

This secluded ruin was once a home for exotic plants.

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

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

Those belting out show tunes might not realize this piano bar marks the site where Thomas Paine died in 1809.

The first piece of public art dedicated to LGBT rights.

Have a steam and some blini at this cafe in a century-old bathhouse.

Discover the taste of mold.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

This Queens hospital has stood abandoned for almost 20 years after its patients were secretly relocated in the dead of night.

The most confusing clock in New York.

Little Red Lighthouse under the George Washington Bridge.

A modern zoetrope on the New York City subway.

One of only two remaining Victorian-era greenhouses in New York.

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