This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

This granite rock face is named for the magnificent reflection that occurs when the sun hits it just right.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

An enormous natural sandstone bridge in Kentucky.

The world's longest known cave system.

This limestone outcropping was once a ceremonial site for ancient Native Americans.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

This simple, broken column marks the final resting place of one of America's most famous explorers.

One Confederate statue that accurately reflects the ugliness of its subject.

This replica of the Greek structure is in the heart of Nashville.

A key producer of charcoal iron in the early 1800s, the structure still stands today.

Miraculous tree that seems to sprout out of solid rock.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

The largest self-built castle in the U.S., six decades in the making.

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

Home to the deepest rift anywhere on Earth.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.