Prison made famous by The Shawshank Redemption has been out of commission since 1990.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

Rare recess caves fill this unbelievably beautiful Ohio park.

A castle built by an eccentric medieval enthusiast in rural Ohio.

An abandoned relic of the city's failed experiment with below ground transit.

The largest earthwork effigy in the world.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

The unbelievably opulent home built for an infamous newspaperman.

This large midwestern cavern features impressive rock formations and an underground waterfall.

The ravine where Jesse James supposedly performed an impossible jump to evade capture.

A monument to the center of the North American continent may be off by a few miles.

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

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

This erect, phallic geological spire wasn't always named so domestically.

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.

This cave was hidden for thousands of years, storing the worldly goods of ancient Native Americans.

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

A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

A volcanic fissure over two miles long and up to 70 feet deep.

A rugged lava field dotted with molds of the ancient pines that were growing when the volcano erupted.

While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

This frequently-photographed waterfall takes only a short hike to visit.