When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

See six states from the newly restored 100-year-old historic roadside attraction.

A convincing little bit of ancient Egypt smack dab in Richmond, Virginia.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

Art Deco urban decay at this historical building.

This woodland architectural installation acts as a camera obscura for the heavens.

Man-made geyser that rises to the exact height of the Gateway Arch.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

The former Naval shipyard is open for exploring - mostly.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

See massive fossils that are over 200 million years old in northeastern Arizona.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Beautiful Gothic-inspired lighthouse stands out among the run-of-the-mill striped fare on Bodies Island.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

The first declared National Monument in the United States.

Portlandia is the second-largest copper repoussé statue in the United States.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

The folks at the Devil's Rope Museum want you to get hooked on barbed wire history.

Nature's biggest mammal swims in landlocked Oklahoma.