Hidden for 165 years inside a building designed by Thomas Jefferson are the remains of what may be America's first educational chemistry lab.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

The Virginia farm where John Wilkes Booth met his grisly end is now largely forgotten.

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

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

One of the last active volcanoes on the Eastern seaboard.

Paranormal investigators claim this abandoned asylum is the most haunted spot in the eastern U.S.

This historic mansion was built as a symbol of love between a husband and wife.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

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

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

Legend has it the mill owner's daughter, Mary Musgrove, helped a Patriot soldier hide behind these falls.

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

Discovered by a soldier during the Revolutionary War, these springs helped create an iconic South Carolina ginger ale.

The remains of a chapel created for convenience.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

North America's oldest authentic African Village.

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

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

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