This 41,000-acre wetland complex is the largest marsh in the interior of the United States.

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

These free-roaming horses were once destined to disappear from the land.

A mysterious "wedding cake" castle in the middle of the urban desert.

A geological mystery on Camelback Mountain.

The ghostly remains of an accidental sea.

Version of the French Riviera destroyed by the sea.

A giant desert bird that once swung music fans at Coachella now has a home in a nearby traffic circle.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

A second generation sun-powered marvel lights up the night.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

The set location for a 1987 cult classic draws international film buffs to the middle of the Mojave Desert.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

Built as a schoolhouse in 1914, this Mission-style building has also served as a dancehall, a library, an Army canteen, and now a cultural museum.

Baroque celebration of the end of the Great Plague of Vienna.

The topiary maze at the Habsburg hunting lodge.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

This 1930s log cabin began as a taxidermy museum but is now a popular country music venue.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

A stealthy Apache hideaway that became the haunting site of a mass grave.

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

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

Along the old Route 66 is an abandoned trading post made from old telephone poles, built by a former circus clown.

This sanguine boulevard was named after a deadly cowboy bar fight.