The lost town of Neversink, sunk by New York City.

This once sprawling resort now sits abandoned, filled with graffiti and vibrant colors from an era long passed.

Famed activist Hellen Keller was involved in the operation and administration of this vacation home for blind women starting in the early 20th century.

Adherence to strict Jewish laws is required to enter this ultra-conservative New York village.

The remnants of a luxurious resort that saw its peak in the 1970s and 1980s has been abandoned since 2009, leaving behind the wreckage of both the hotel and a beautiful ice skating rink.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

The oldest continuously inhabited street in America.

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

Memorial built in 1922 in remembrance of WWI casualties.

The third-tallest lighthouse in the United States stands as a reminder of Atlantic City's early days.

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

Rusting away on the edge of New Jersey are the remains of a Cold War missile launch site.

The site of one of history's most indelible and horrific tragedies.

A toxic ghost town sitting atop a massive coal fire.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

Once used as a deterrent to drinking alcohol.

A desiccated merman and a walrus penis bone are among the oddities in this eclectic collection of shipwreck treasures.

This building at the south end of the boardwalk was once home to the U.S. Life-Saving Service and the U.S. Coast Guard before being rescued itself.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

The land is home to swimming ponies and a legendary 18th-century treasure.

The solitary grave of a schooner captain killed by lightning while serving biscuits.