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.

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

A war memorial that appears to ascend from its forested setting.

Who is this marble man, perpetually creeping up the steps of his own mausoleum?

The monument dedicated to Phineas Gage in the town where his accident happened.

This cavernous abandoned marble mine is popular with ice skaters in the winter.

Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

This folk art dinosaur was almost pushed to extinction due to lack of a building permit.

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

The oldest covered railroad bridge still standing in the United States.

One of the earliest—and most commonly forgotten—acts of rebellion against English rule.

A gravestone marks where a man's lost limb was laid to rest.