A historic presidential getaway on the continental United States' southernmost island.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The author's beautiful and historic home is also a fully functioning goat farm.

A historic covered bridge, only one of two remaining in North Carolina.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

This 5-by-6-foot wooden hut is the smallest historic post office in the U.S.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

148 feet long and in the middle of a verdant forest.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

This woodland architectural installation acts as a camera obscura for the heavens.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

All that's left of the quintessential "cabin in the woods."

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

One street divides a single town that stands in two U.S. states.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

North Carolina's finest examples of Native American pictographs have survived for 5,000 years.

An art instillation for the sake of "raising vibrations."

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

This abandoned amusement park was built on a site with a dark history.