Collectors keep the story of Ohio Valley glassmaking alive.

Rows of 19th-century brick ovens used to process coal into coke form the center of a wooded park.

The overgrown remains of an old rail bridge rise above the valley like ancient Greek ruins.

This feline raises a friendly paw at drivers barreling toward the freeway.

Concrete igloos standing across from what remains of the Michigan Central train depot.

Everyone's invited to put on a miniature concert with this world-class musical wonder.

This Ohio cemetery is home to the remains of many Confederate officers and soldiers who were once held nearby as prisoners of war.

One of the few surviving "Wigwam"-themed motels.

Dedicated to the largest armed uprising in American history since the Civil War.

The tallest waterfall in West Virginia.

This museum was once the home of industry titan Matilda Dodge Wilson.

The only thing still moving in this town is the eponymous hot spring.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

These structures were inspired by both Native American shelters as well as, strangely, an ice cream shop.

An Italian restaurant became a rock-and-roll hangout and the lair of the "Hollywood vampires."

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

This small, nautical gift shop is home to a 500-pound behemoth.

See prehistoric footprints, plus two complete mastodon skeletons.

This mechanical wonder towers above a river in Michigan's capital city.

Astounding collection of coin-operated games and automata.

The remains of a massive blast furnace in what was once one of the country's largest iron-producing regions.

The unbelievably opulent home built for an infamous newspaperman.

A tribute to the statues of Easter Island along Route 66.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.