The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

America's first federal monument.

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

The only recreation of William Shakespeare's indoor playhouse.

Take an otherworldly journey in a school dedicated to out-of-body experiences.

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

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

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

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

America's first public mental health facility.

The highest point in Virginia can only be reached by passing through ponies and flowers.

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

The resting place of a Civil War celebrity's amputated limb.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

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

An original apothecary from 1792.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

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

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

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

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.

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