Volcanic stone sentinels stand watch at a Korean Bell Garden in Virginia.

Scattered around Atlanta are little doors with big charm.

Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.

An eponymous directional signpost erected by the first president of the United States.

The oldest arched-covered bridge in Virginia has truly withstood the test of time.

This stone is a marker of one millionaire's personal vendetta against gravity.

The largest cemetery in the American Southeast is a hidden gem near the heart of Atlanta.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

The ruins of a cotton mill that was burned in the Civil War are still hidden in a Georgia forest.

The ruins of a paper mill destroyed during the Civil War still tower over a tributary of the Chattahoochee River.

The remains of one of America's first radiation testing grounds still rest ominously in a Georgia forest.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

An overgrown garden stands as a grim marker of an unrealized dream.

The Home and murder site of the witch of Rehmeyers Hollow.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

This four-story steel sphere in Maryland was used to test biological weapons.

Exact replica of the ancient monument, but much, much lighter.

This field of concrete was once an active defense site armed with nuclear warheads.

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

The well-preserved remnants of a bridge that once made up a WW1-era military railroad.