At 238 feet above the bottom of a gorge this span is known as the biggest thrill on the road to McCarthy.

The arch marks the beginning of the road for northbound travelers.

This balancing rock is one of Utah's most unusual geological formations.

A tribute to the statues of Easter Island along Route 66.

Don't blink or you'll miss it.

The remains of a boarding school designed to forcibly assimilate Native American children.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

The sign that drew attention to a young boy's cucumber stand is now the name of his fruit superstore.

A hidden beach at the end of a tunnel of mangrove trees.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

More than 25 fully functional scale replicas of famous lighthouses dot the shores of Lake Havasu.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

Thousands of turbines whir at at the origin of North American wind power.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This church on a Tohono O'Odham reservation has stood since 1797.

Oddly shaped rock formation, misassociated with a nearby utopian community.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

The location where the iconic movie character declared it was time to go home.

This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water

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

A geological mystery on Camelback Mountain.

Roadside collection of 65,000 signs.