Step inside Lucy, the world's largest "elephant."

One of the largest public housing complexes in New York once visited by Eleanor Roosevelt.

From this desk Al Hirschfeld drew his influential caricatures of the 20th century's Broadway stars.

The ballpark in "Pigtown" where the Brooklyn Dodgers made their name was replaced with a huge apartment complex.

Final resting place of the immigrant who brought artificial seltzer water to America.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

New York's oldest concrete structure is being preserved thanks to the gentrification of Whole Foods.

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

A heartbreaking monument showing the last morning in the life of Jane Griffith.

This castle-like building in Manhattan helped destigmatize cancer in the 19th century.

Con Edison’s exotic and heat-loving pests.

Oldest existing wire suspension bridge in the United States.

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

A cargo of beautiful music.

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

The mass grave of a heroic Revolutionary War regiment sits below an empty lot near the Gowanus Canal.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

The home of aviation trailblazers, in a remote corner of the big city.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

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