The monumental steeple on Amherst College's campus has no church attached to it.

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

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

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

Piano-making empire filled with 200-year-old steam machines still churning out 1,000 instruments a year.

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

The most confusing clock in New York.

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

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.

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

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

Lie in a hammock where George Washington stood.

A bit of retro transportation flair preserved in the world's largest department store.

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

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

The "Seinfeld" diner.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

One of only two commuter aerial tramways in the United States.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Elevated freight railway turned wildly successful urban park.

A World War II-era submarine is stuck in the mud in New Jersey.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.