Two massive and unstable sinkholes are yearning to unite, and their consummation could be catastrophic.

The above-ground crypts at this Catholic cemetery face north-south instead of the usual east-west.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

This 12-foot-tall T-rex is the largest K’Nex skeleton sculpture in the world.

Down the road from where the Wright brothers lifted off is another flight tribute practically hidden from sight in the woods.

Installed as a beacon of hope for a hurricane-racked island, the statue had to be moved multiple times due to the eroding coast.

One of the few surviving Panama Canal steam shovels stands outside a tiny Colorado mining museum.

After the parade, students throw their beads on the tree hoping for good luck on exams.

The symbol was surreptitiously built into the river bank by German prisoners of war.

A wealth of local folk art, antiques, and curios, without ever leaving your car.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

Deadly airliner crash preserved for those willing to climb and pay respects.

An eclectic collection of artifacts from the Wild West is preserved in a remote fictional pioneer town.

A museum devoted entirely to the rattlesnakes and snake-related art.

On the side of a remote mountain, a stone face bearing an inscription of mysterious origin.

A colorful public mural in San Antonio's West Side encourages students to stay in school.

The cremains of those who donated their bodies to science are buried in a tiny cemetery behind the building.

It's clear this abandoned Art Deco gem was no ordinary cleaners.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

A local landmark with generations of spraypainted messages, and more being added each day.

Reproductions of nine banned oil paintings coyly hidden behind a curtain in a New Mexico conference room.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.