The only diamond mine in the world where you can keep what you find.

The remains of the first public diamond mine in Arkansas.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

The Ozarks' strangest dwelling.

An extravagant western hotel where every floor is the "ground floor."

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

This century-old roadside attraction is full of bizarre rock formations.

These mid-century motels once housed the workers who built the Glen Canyon Dam.

The remnants of a creative early method of wildfire prevention.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

This small interfaith chapel lies not far from the rim of the Grand Canyon.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

This hidden jockey “walk of fame” celebrates the winning riders of the Kentucky Derby.

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

This 19th century mansion façade adorned with immigrant patriotism is a symbol of Louisville’s history.

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.

This strange example of the Egyptian Revival architecture trend now holds Mardi Gras floats.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

Before becoming a public park, this spot was a shell midden, a fort, and an amusement park.

This New Orleans statue of a portly figure in a goofy hat pays homage to a classic of satirical literature.

A 19th-century Gothic, castle-like statehouse by the Mississippi River.