Headquarters of the legendary clairvoyant's readings, spiritual hospital, and massage school.

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

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

A double agent hid information for the Soviet Union beneath this bridge for more than 20 years.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

Under a playground is a little-known sealed train tunnel that likely contains the bodies of workers trapped by cave-ins.

At 207 feet, one of the world's longest continuous escalators.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Outsider art meets paleontology at this roadside reptile repository.

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

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