Hiroshima survivor on Riverside Drive.

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

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

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

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

This giant boulder is sandwiched between apartment complexes in upper Manhattan.

New York City's only radical feminist independent bookstore.

A decommissioned military complex that's now a modern industrial park.

Once a ferry dock, radio transmitter, and now a new Greenpoint park.

Constructed in the 1920s, this former pencil factory is now an office building.

Church featuring "high Victorian gothic" architecture.

Neoclassical bank designed by NY architects Helmle & Huberty.

The only surviving sidewalk clock in Brooklyn.

Historic Greenpoint theater, turned roller disco, now housing a chain pharmacy store.

Once a flowing stream and where the USS Monitor, the world's first ironclad, was built and launched.

A modern addition to the Greenpoint skyline.

Thriving meadows span a rooftop in one of Brooklyn's most heavily industrialized neighborhoods.

This landmark cemetery in Boston was created more than 300 years ago.

Millions of numbers carved in glass represent the tattoos forced upon victims.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

Statue commemorating the use of ether in anesthesia.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.