First a root beer ad, then a golf course clubhouse, and finally a massive teapot.

After covering almost 1.5 billion acres, the survey's still not finished.

Where the Model T was made and the assembly line was invented.

A wacky two-story folk-art assemblage of carved and found objects, with lights, motion, and sound now in need of financial support.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

It's been called “Detroit’s largest art object.”

The birthplace of the Ford Model T is now a museum full of antique cars.

Glass and concrete building designed by Albert Kahn.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

A dedication plaque on this Boston tunnel is a microcosm of a massive, controversy-laden construction project.

One New Hampshire alleyway has become home to a public gallery of feline art.

This 880-acre facility is home to a massive collection of vintage motorcycles and cars, as well as a 2.38-mile race course.

Once one of the largest producers of pig iron in the world.

A 56-foot tall statue of the god of fire looks out over Birmingham, Alabama.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

The former home of the five-time Socialist Party nominee is now a museum dedicated to his career.

A singular collection of hand-built art deco cars are held in a building with style to match.

Home to over 300 antique cars and motorcycles, including Thomas Edison's Model A.

The remains of a religious colony, its amusement park, zoo, and baseball empire.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

Perhaps the world's only gas station inspired by a political scandal.

A giant sculpture dedicated to a staple of South Bend food culture.

A Roman-style column in Oregon hides a spiral staircase inside.

Two massive rock outcroppings on the Oregon coastline.