A 19th-century horse lover's bequest led to the construction of this unique fountain in Chicago.

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

A relic of the Cold War in Chicago.

The NBA player's elaborate former home is now a ghost of its old glory.

An actual 1957 Cadillac De Ville, encased in 15 cubic yards of concrete.

The fifth-longest natural arch in the world, and the longest outside China.

Inside this striking glass building, visitors can see thousands of dinosaur fossils in the positions that nature deposited them more than 150 million years ago.

An obsolete, vanishing traffic device warns Cincinnati drivers away from middle-of-the-road obstructions.

Hidden on the 7th floor of a historic building, this Cajun spot features wall-to-wall bottles of hot sauce.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

Purdue students would lean over this iron fence to skirt campus rules against smoking and courting.

Historians and hobbyists head to this former French outpost for the annual Feast of the Hunters' Moon.

One of Chicago's last seafood smokehouses perfects a dying breed of fishcraft.

A mountain of conch shells created by centuries of fishermen.

This national park dedicated to the tallgrass prairie ecosystem still displays its military past.

A theater sits abandoned on Roosevelt Road, once majestic in splendor, now majestic in decay.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The largest earthwork effigy in the world.

A real flying saucer, contracted by the U.S. Air Force.

Rare recess caves fill this unbelievably beautiful Ohio park.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

This giant temperature attraction created some giant electric bills.