A reliquary of pop culture marvels, including the world's largest (and most terrifying) Jack-in-the-Box.

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

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

Resonating tubes make music from highway overpass.

More than 200 unconventional musical instruments that anyone can play.

This abandoned neighborhood is now a park filled with beautiful trees, wildflowers, and hints of its past.

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.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This sprawling 18th-century cemetery features unique and beautiful gravestones, including one shaped like a tree.