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."

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

Seven flags adorn this Texas museum, one for each of the powers that have ruled the area.

When you can afford only half a road, you build only half a road.

A mere dot on the map in the great north woods is the first place in America to vote in Presidential elections.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

Where Elvis Presley received his first Army buzz cut.

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.