This grisly headstone doesn’t seem to be resting in peace.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

An overlooked memorial honoring the local Washington residents who died in World War I.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The first memorial dedicated solely to the Black troops who fought for the Union.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

Perhaps the most scandalous statue of America's first president.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

Look closely and you’ll notice that the color changes a third of the way up the tower.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

The beloved, war-tested mascot of a Union regiment graces their battlefield monument.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

This covered bridge was used by both Union and Confederate troops during the Battle of Gettysburg in 1863.

This Civil War monument was designed by an eccentric architect and Gettysburg veteran.

Where the oil industry began.

Home of the only civilian casualty at the Battle of Gettysburg.

The penultimate and final resting places of British General Edward Braddock—minus a few bits and pieces.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

Step back in time on this preserved 1800s farm.

A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

The author's beautiful and historic home is also a fully functioning goat farm.