Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Native Americans built this circle of stones, which was used to predict astronomical events.

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.

The first declared National Monument in the United States.

Otherworldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

This erect, phallic geological spire wasn't always named so domestically.

An experimental, automotive replica of Stonehenge.

This refurbished gas station is one of the oldest in Texas, located on the original Route 66.

A town pays homage to its namesake.

This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

A collection of massive stacked rocks in Texas includes a snarky note on the benefits of modern technology.

In Paris, Texas they have their own Eiffel Tower, it just has a cowboy hat on it.

Once in disrepair, this popular Texas stop along iconic Route 66 has been restored to its past glory.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

This rural roadside cross marks the farthest point of Coronado's expedition, and the place where the Catholic faith first came to America.

Celebrating the cultural heritage of Kansas’s premier cowtown.

This unfinished tribute to a hometown hero and early baseball great is now an abandoned roadside attraction.

This tiny old water tower once doubled as a makeshift jail.

Once an ancient sea, this landscape of rocky ravines is filled with the fossils of ancient marine life.