A precariously balanced rock perches on the edge of a cliff created tens of thousands of years ago by glacial erosion.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

The fifth-longest natural arch in the world, and the longest outside China.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

One of the few surviving original NASCAR dirt-track speedways.

A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

Down the road from where the Wright brothers lifted off is another flight tribute practically hidden from sight in the woods.

The Cadillac Ranch for monster truck aficionados.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

Some North Carolina Cherokee have been keeping their history alive for decades with a single play.

A collection of vehicles across American military history.

A glimpse into the sacrifices of military members during World War II.

A museum dedicated exclusively to aircraft used in the military.

This sprawling museum holds one man's giant collection of real tanks.

An innovative attempt to break a siege in the American Civil War still scars the earth today.

The only place for a truly presidential dram.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

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

The highest point in Virginia can only be reached by passing through ponies and flowers.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.