A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

This evocative New Jersey statue memoralizes the Polish victims of a Soviet massacre.

Once considered a marvel of engineering, this 107-mile canal played an integral role in building New York City.

On the Hudson resides one of the largest clocks in the world.

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

For 20 years, local pumpkins have met their fate on the iron fence surrounding this Cobble Hill home.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

This ominously named New Jersey street seems to be attracting over-the-top legends of its own making.

A small cave hidden deep within the Jenny Jump State Forest.

An allegedly haunted testament to a local businessman's desire for status, posterity, and charity.

A gazebo that inspired the fifth episode of the "Twilight Zone" still stands in the creator's hometown

The oldest continuously inhabited street in America.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

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

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

Amid skyscrapers and traffic exists this unique aquatic ecosystem.

Imagine having a street run right through your home, or better yet, a historic bridge three stories high.

Try not to get slimed in Tribeca.

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.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A partially hidden wall graffitied by spectators of the 1976 Bicentennial, recently rediscovered.