This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

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

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

More than 300,000 historical artifacts from the famous music venue, from Duke Ellington's handwritten score to The Beatles' booking slip.

The most confusing clock in New York.

The site of the deadly Triangle Shirtwaist Factory Fire.

Commemorating the spot where the famous scientist fed his pigeons.

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

A staggering collection of photographs depicting medical, social, and historical change.

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

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

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.

Hear the tales of New York's most notorious criminals.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.

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

This neighborhood grocery houses a treasure trove of Eastern European delights.

Avoid gangster interaction while window-shopping.

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

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

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

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