The Cadillac Ranch for monster truck aficionados.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

A trading post in the North Pole where children send letters.

Clean, cold drinking water flows from a nondescript pipe in a roadside rock face.

A suburban street in Anchorage doubles as a runway, and each home has its own airplane hangar.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.

Open day and night, a church with three pews and Bibles.

America's only city hall with minarets took architectural cues from Ali Baba and the Forty Thieves.

Decorative shell walls built in the 1940s sit atop an ancient midden created by the Calusa Native Americans.

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

In memory of the 110 victims of ValuJet Flight 592 that crashed in the Everglades.

The island residents are known for taking their quirky sense of humor with them to the grave.

Near the ruins of a Civil War coastal fortress lies the only known African refugee cemetery in the United States.

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

This statue inspired by Renoir's famous painting embodies the jovial spirit of Key West.

"We Seceded Where Others Failed."

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

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

A monument celebrating the idea of reaching inaccessible places.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

Dedicated to the victims of one of the deadliest hurricanes to strike the United States in recorded history.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

Colombia's first concrete structure doubles as a replica of Versaille's Petit Trianon Belvedere and a symbol for development.