A replica viking ship from the Chicago World's Fair is still in dry dock in an Illinois park.

This national park dedicated to the tallgrass prairie ecosystem still displays its military past.

A circus of light and sound forms a sensory ode to an iconic train that will never pass through town again.

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.

The preserved remains of the former Milwaukee County Hospital for the Insane are hidden in the wooded grounds of County Park.

The site of a gold-digging conquistador's bloody landing in the Americas.

A tribute to the life and work of the beloved "Peanuts" cartoonist.

Largest man-made excavation on earth!

The notorious Wild West outlaw was raised in this unassuming abode.

One man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

Although it also features red, orange, and variegated cliffs of Navajo Sandstone, this state park is often overshadowed by its more famous neighbor.

A stoic rock cairn is all that remains to remember one of the more brutal instances of frontier treachery in American history.

This central Nevada cave is the spiritual home of ancient and enigmatic pictographs.

This rest area is also home to a remarkable petroglyph site.

The site of the first "historically true" UFO encounter in the U.S.

Many believe these images represent interstellar lifeforms.

A unique collection of drawings that represent Fremont Native American culture.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

An abandoned sawmill from more than 134 years ago stands testament to the ambition of one man.

The remote resting place of a notorious Wild West outlaw whose death is shrouded in mystery.

Some of the Old West's most notorious outlaws frequented this mining town.

This once-booming Gold Rush town is now home to a herd of feral donkeys.