The king of U.S. high points towers over every other peak on the continent.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

A cannonball from Union forces battling John Hunt Morgan made this church a permanent home.

Twenty-eight years after this local landmark was washed ashore by hurricane Hugo, it was washed away by hurricane Irma.

The Lowcountry color with the power to stop evil from entering a home.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

One of the oldest living oak trees in the Southeast.

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

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

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

A spiritual vortex among the red rocks in Sedona.

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

Take a steam-powered ride straight out of the past on this Appalachian rail line.

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

The nearly 200-year-old building displays a perplexing grammatical error.

One of the last few period-correct, hand-operated canal locks in the country.

The spectacular collection of one of the world's best woodcarvers.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

An office built to look like a giant basket.

Twelve sculptures designed to make their best showing with the coming or going of the sun.

The longest fence in the world stretches over 3,000 miles to keep the dingoes out.

This eccentric cave dwelling is bizarre even by the standards of a subterranean town.

An opal mining town in the middle of Australia where people live, worship, and shop underground.