Abandoned blast furnaces are an enduring reminder of Scranton's once booming iron business.

A former infectious disease laboratory chronicles how tuberculosis shaped a village nestled in the Adirondacks.

It's a repurposed treasure trove of history, located just an hour away from Acadia National Park.

Steam engines and conveyor belts are remnants of a genius system left in the middle of the Maine woods.

Largest institutional collection of tomb figures from Western Mexico in the United States.

Walk the same tracks that once ferried Gilded Age aristocrats to their vacation destinations.

This 19th century granite fortification is one of the most well preserved forts in New England.

An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

A historic recreation of the golden age of the Erie Canal, abandoned for some time, slowly being restored.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

This abandoned ironworks was once the most important military supplier in America.

Reclaimed by nature, the ruins of Doodletown, New York are remnants of a town consumed by a state park.

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

A curious collection dedicated to human and animal anatomy and pathology.

The headquarters in Salem doubles as an occult art gallery.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

In the early 1800s, surgery was also a show.

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

Where America's first doomsday cult awaited the end of the world.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

Home on the Hillside, and home of the first breakfast cereal.