Home to the organ played at General MacArthur's funeral.

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

Little has changed in the way that this mill operates since the 18th-century.

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

A superbly preserved example of Georgian residential architecture that was once home to one of the founders of Alexandria, Virginia.

These figures float and flutter in this fountain crafted by famed Swedish sculptor Carl Milles.

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

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

An 83-foot tall granite obelisk honors the legacy of Dr. King in the heart of Norfolk's Black community.

In 1932, Americans honored their first president's 200th birthday by planting trees.

In 1889, a small group of women began meeting to discuss literature, art, and other topics. Their every-other-week salon grew into a lending library that still exists today.

Designated as an Underground Railroad research site.

This small museum houses rare airplanes from aviation's golden age.

A sculpture made from recycled materials and hand-blown glass dedicated to transportation and transformation.

Every autumn, this grove of living fossils erupts in a blaze of brilliant golden-yellow leaves and stinky fruit.

In an effort to escape the horrors of slavery, one man mailed himself to freedom.

Named for a Greek oracle that interpreted the words of Zeus, this beautifully-restored manor home was once home to the architect of the Marshall Plan.

On the side of a Virginia highway, a collection of monuments commemorates an 18th-century trek through the Blue Ridge Mountains.

The location where the American Revolution ended.

This tower was once used to create ammunition for early settlers.

This Federal-style plantation house was once visited by Abraham Lincoln to meet with generals during the Civil War.

Constructed by the younger brother of George Washington.

A collection of vehicles across American military history.

The first national memorial to honor all women suffragists stands on land where suffragists were once imprisoned.