The naval commander’s proudest moment in battle is memorialized in this unique tomb at Arlington Cemetery.

The location where the American Revolution ended.

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

The airport was once a Civil War battleground, and the earthwork defenses can still be seen today.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

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.

The rogue roots are gradually consuming some of the historic marble grave markers.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

A mysterious light of unknown origin on the backroads of Missouri.

Erosion and time have created a naturally-formed water park.

The site of the notorious Camp Sumter Prison is now a peaceful memorial.

This Las Vegas casino boasts one of only three spiral escalators in the United States—an engineering wonder.

An antique Beechcraft airplane serves as a giant windsock for people driving through the blustery open country of eastern Wyoming.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This simple badlands butte is the highest point in North Dakota and may be the only high point to charge admission.

A replica of a fort built from a frontier town's mass hysteria in the face of false reports of impending Native American violence.

The metal bird, nicknamed "Sandy," stands nearly 40 feet tall and is an homage to the birds that migrate through North Dakota every year.

These former Cold War launch sites have been preserved for tourists to see where the button might have been pushed.

Seth Bullock, the sheriff of Deadwood, built this town immediately after Teddy Roosevelt’s death in 1919.

This vintage train once gave new meaning to “swimming upstream.”

Visit a church sculpted from hardened lava.

Every president in history is immortalized in bronze in downtown Rapid City.

This soaring sculpture and Sioux Falls landmark represents the leap of faith taken to make one's dreams come true.