Dozens of houses in the Adirondack Mountains are reminders of a literal "cottage industry" to cure people of a deadly disease.

It wouldn't be long after purchasing this farm, Brown would lead his siege on Harper's Ferry.

More than a century after her death, Little Gracie Watson remains one of Savannah's most often-visited residents.

This tower commemorates the spot where George Washington hoisted the Grand Union flag.

This small glass cube is a peaceful out-of-the-way sanctuary at the busy airport.

On top of Gibbet Hill lie the ruins of a lavish turn-of-the-century estate that never quite came to be.

Sacks of potatoes, made of cast stone, mark where the iconic potato sheds once stood along the river.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

After the musical legend's death, his memorial was mysteriously graffitied in gold.

Dakota legend claims this locally iconic pinnacle was once part of a sacred burial site that was cleaved in two.

This water tower has been a staple of the Rochester skyline since 1931.

Massachusetts memorial to murder victim Elizabeth Short near the spot where she was born.

The only certified Trappist brewery outside of Europe hides in the central Massachusetts hills.

Friction between grains of sand cause a curious "singing" sound.

Trash escaped from a landfill to fill beaches with all kinds of treasure.

Radical Bookstore and Community Space.

More than 200 unconventional musical instruments that anyone can play.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

Dedicated to one of the darkest moments in Irish history.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.