The only free-standing, vertical sundial in the US was keeping standard time before it was even invented.

A historic blockhouse and trading post give a glimpse into the early colonial history of South Carolina.

The uniquely-designed winter home and sculpture studio of Anna and Archer Huntington.

Dedicated to the history of the health sciences.

The only working large-scale tea plantation in the United States.

The remains of a chapel created for convenience.

4,000 monkeys used for medical testing on an island off of South Carolina.

Paths are maintained, but trees have taken over plots.

Amazing pre-Civil War ruins alongside a shallow, rocky river that hosts beautiful (but endangered) lilies.

This natural spring not only claims to heal the wounded but it has also been willed to God.

Charleston's historic city jail once held everyone from pirates to Civil War POWs.

Settled in 1696, abandoned after the Revolutionary War.

Oldest unrestored plantation house in America that is open to the public.

"Not too many people can say they've had a nuclear bomb dropped on them, not too many would want to." — Walter Gregg.

The oldest bridge in South Carolina may have been designed by the same man who created the Washington Monument.

An unfinished rail tunnel that has since been used to house cheese and bats.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

One of the oldest living oak trees in the Southeast.

A museum to a cave explorer whose tragic death was a media sensation, and whose corpse became a tourist attraction.

This calm grassy field was once a Superfund site full of thousands of nasty chemicals.

Visitors to this Kentucky homestead turned museum are immediately transported back to the Antebellum south.

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

Kentucky's longest operating jail is now a spooky spot to spend the night.

Amazing taxidermy dioramas from the 1960s in a cement building meant to look like an ice cave.