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

This giant Massachusetts sycamore is said to hold the dubious distinction of being the "widest tree East of the Mississippi!"

Known by nicknames like the "Jersey Jumper" and the "Daring Yankee," Patch was the first famous daredevil in the United States.

Explore the evolution of printing technology, from cuneiform to Kindle.

An unoccupied lighthouse encased in layers of ice from the waters of Lake Erie.

The first blast furnace in the United States that used coal and coke fuel instead of charcoal to make pig iron.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.