The largest single-building tribal cultural center in the U.S. is an expansive museum in Oklahoma City.

A crew of die-hard train buffs spent decades turning a defunct stretch of railway in Oklahoma City into a museum now home to over 50 antique and restored trains.

The largest cattle market on earth holds live auctions open to the public every week.

A quirky mishmash of Route 66 memorabilia and other throwbacks from the past.

This saltwater swimming pool, which is the last of its kind in the United States, is slowly crumbling within sight of multiple high-end beachside hotels.

A series of silhouettes that recall the great cattle drives of the 19th-century.

This giant mimetic milk bottle has encouraged Route 66 travelers to choose dairy since 1948.

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

This hauntingly beautiful stretch of Florida coastline is covered in sun-bleached trees.

Take a stroll through this centuries-old tunnel of enormous moss-hung evergreens, nestled among the grounds of America’s first public sculpture garden.

This maze-like, oceanfront gift shop—the nation’s largest— has been serving kitsch to the Myrtle Beach community for over 80 years.

Take in some Air Force history—and ogle some beautiful planes—at this little-known park near Myrtle Beach’s seashore.

One of the best-preserved medieval streets in Europe.

For one month, the fields and skies of Gibbon, Nebraska, come alive with one of the largest gatherings of sandhill cranes in North America.

See four top-secret US spy aircraft of the Cold War era, including the legendary SR-71 Blackbird and the A-12 Oxcart.

A memorial for public executions that dates back to the 14th century.

Fantastic stainless steel dragon gates complete with mesh wings.

The maritime museum that boasts the largest nautical library in the western hemisphere.

A small section of native wilderness on a university campus

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

One of America's founding fathers lived in this London lodging between 1757 and 1775.

This cannonball embedded in the side of an Edinburgh house once served a surprisingly pedestrian purpose.

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

The only fully-realized skyscraper built by the famed American architect, Frank Lloyd Wright.