A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

What remains of the summer palace of King Kamehameha III.

A Hawaiian stairway to heaven—that you can't climb.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

A piece of the iconic wall found an unlikely new home in a Vegas bathroom.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

Experience a charming 1930's version of "infotainment."

Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Abandoned since the 1950s, the streetcar lane beneath the heavily trafficked bridge lays empty and unused.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

Opulent downtown movie theater now houses cars as an indoor parking garage.

Detroit’s downtown castle is one of the oldest structures in the city.

A Beaux-Arts triumph set to become Ford's innovation campus

The world’s largest Masonic temple was saved by the White Stripes.

Glass and concrete building designed by Albert Kahn.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

The Kalamazoo factory has 100 years of instrument-making, and one big wartime secret.