The stones that traveled from Spain to eventually become a holy place for San Francisco's nature worshippers.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

A regular looking rock with an unbelievable history.

A massive sea stack famous for its appearance in The Goonies.

A Prada store in the West Texas desert that is never open for business.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

This cave holds a surprisingly colorful variety of geological oddities.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

Walk the whole Mississippi River!

North Carolina's finest examples of Native American pictographs have survived for 5,000 years.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

The Grand Canyon of Texas.

148 feet long and in the middle of a verdant forest.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

If astronomy had a ghost, it would look like this observatory.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

These curious caverns have been home to mushrooms, gangsters, and disco.

Home to the "Circus" trees created by Axel Erlandson.

Visitors can walk over the largest concentration of Columbian mammoths to have died from one event.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.