The Kirkland Monument remembers a selfless Civil War hero who braved the battlefield to give water to his dying enemies.

A former major munitions plant that has been converted into a sprawling art space.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

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

A former Confederate hospital serves as a remembrance of wounded and dead soldiers.

The Grand Ole Opry's big voice came from a small home in rural Virginia where she was eventually buried.

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

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

A "hospital" where people went to be quarantined, die, and be buried in the yard.

America's first federal monument.

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

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

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

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

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.

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

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

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

Decades before the scandal, this staircase on the river was a literal "water gate."

The national park was once a plantation estate.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.