The cliff and rock formations are made out of Sioux Quartzite.

An obelisk commemorating Lincoln's role in connecting the coasts.

Curious rock formations in a tiny Kansas state park.

Toss a Frisbee through the ruins of this Colorado gold mining town.

While he no longer has an eatery to give him context, this off-brand Paul Bunyan still holds his giant hot dog with pride.

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

A small cemetery chapel designed by Frank Lloyd Wright and built in 1906.

The site of an ancient Mississippian settlement that appears to have flourished during the 10th to 13th centuries.

Standing at 21-feet tall, this space cowboy adds to the legacy of Route 66's muffler men.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

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

This opulent Pueblo Deco movie palace melds Art Deco and Native American motifs.

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

Is this 47.7-mile stretch of highway the longest straight road in the United States?

Over 50 historic windmills whir away at this outdoor museum.

Inside this small museum resides a strange mix of miniature collections passed down over time.

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

An experimental, automotive replica of Stonehenge.

A ghost town now swarming with dozens of prairie dogs.

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

An Englishman loses his scalp to a Cheyenne warrior and lives to donate it to a library.

One of the stops along the fateful journey of the Donner Party.

A relic of roadside lore and perhaps the first of its kind in North America.