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.

A piece of telecommunications history.

This water tower commemorates the invention of the transistor on this site in 1947.

A New Jersey state park that was once Napoleon's brother's sprawling estate.

This giant satellite antenna services the transmission needs of government agencies and cable programmers.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

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

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

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

The "Seinfeld" diner.

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.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

These unassuming lighthouses have seen the first reading of the Pledge of Allegiance, the first wireless transmission, and more than one mystery.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

A reservoir of vintage pinball machines and arcade games for the nostalgic and thrill seeking.

World War II bunker still standing on the New Jersey beach.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

The boulder on which Alexander Hamilton laid his head after a deadly duel can still be visited on the New Jersey coast.

Local lore claims this park is named after a young woman who jumped off a cliff.