You can climb to the summit of Black Mountain, as long as you sign the waiver.

A local scoured more than 1,000 acres for stone to create his masterpiece.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

The world's longest known cave system.

Prehistoric animals decorate this popular outdoor park.

Moonbows over Kentucky.

What else would you call a playground hidden in Alabama's oldest and largest cemetery?

A 200-year-old bar is all that remains of one Mississippi River town's rough-and-tumble past.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

The second-largest ceremonial mound in the United States is an artificial hill that is loosely shaped like a pentagon.

This monument to the victims of a tragic explosion is said to turn and look at passing cars.

A grandiose octagonal home crowned by a large dome stands out among the antebellum mansions.

A replica memorializes the site where women were punished after the last witchcraft trial in Ireland.

A remarkably opulent mansion with a tragic history.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

A lake with hundreds of ancient skeletons surrounding it. The surprise is what killed them.

The body of an unidentified woman, visible through a glass coffin, was discovered by accident.

The largest cave in Northern Europe.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

The remains of this castle, known as the Witch’s Eye, watch over the Thur Valley.

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

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

One of the oldest living oak trees in the Southeast.