The highway's southernmost spot is a beloved local attraction.

Where hills of dirt conceal the burial ground of one of the most powerful ancient Native American societies.

Electrical pylon in the shape of Disney's beloved mouse.

This glass-stain Mary attracted thousands of pilgrims until her head was shattered by a vandal with a slingshot.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

A Route 66 filling station that was designed to resemble the Hagia Sophia, and is now the symbol of an arts district.

This 1930s-era Route 66 Tulsa landmark was moved, restored, and filled with neon.

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

Though it's no longer a functioning train depot, this castle-like structure is an important piece of Oklahoma history.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

A circus legend leaves an unexpected endowment.

The smallest post office in the United States is no bigger than a broom closet.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

"We Seceded Where Others Failed."

Bat house that has only ever housed bat for one night; they all flew away and never came back.

The largest freshwater lake in the Florida Keys.

A time capsule of Floridian history fights to survive on the banks of Chokoloskee Bay.

The highest bridge in America was built for an almost unnervingly small amount of money.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

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

The land is home to swimming ponies and a legendary 18th-century treasure.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."