The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

The only road through the heart of Glacier National Park.

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

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

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

A small granite block at this monument's base is the only part of Lincoln's Tomb outside of Illinois.

A pyramid commemorates the birthplace of James Buchanan, the 15th president of the United States

A diorama of the Civil War, fought by cats.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

"Where the ducks walk on fish."

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

A local prank turned town icon.

An outlandish shoe shaped house built by an eccentric millionaire.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

Yo, Adrian!

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

An abandoned stretch of highway, deteriorating next to the operational one.