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

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

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 romance of early commercial flight still fills this Art Deco destination.

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

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

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

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

Lone survivor from Custer's Last Stand forever preserved.

A house turned museum is the real-life "home" of the fictional main character of The Wizard of Oz.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

Visitors to this library are in for a real-world education in modernist architecture.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

Oddly shaped rock formation, misassociated with a nearby utopian community.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

The largest island on the great salt lake is home to curious creatures and strange stories.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

The final resting place of a space program monolith.

A giant donut stands as a popular symbol of Los Angeles iconography.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

Honoring the famed folktale author, this California museum looks like it belongs in the Black Forest.

The ruins of the castle that chemicals built.