The remains of this deep, dark mine have left behind a haunting rocky warren of tunnels.

Ruins battered by centuries of war and disaster offer a wondrous glimpse of medieval Ireland.

Once the longest bridge in Ireland, this rusting span sits abandoned and overrun by nature.

Deep vertical fissures like miniature slot canyons cut across the cemented volcanic rock of Black Point above Mono Lake.

A scenic hike in the High Sierra that ends at an old gold mine.

A unique collection of old miners' cave homes carved in to the hillside cliffs near Death Valley.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

This collection of vintage signs reflects the long and colorful history of this Arizona town.

This collection of neon icons is preserving Arizona's history, one sign at a time.

An amazing collection of model trains, collectibles, and artifacts that span the last 100 years.

A Tucson museum and performance space full of found-object movable sculptures.

Miniature art that tells an enormous story.

The fading, forgotten remains of a once bright and booming factory.

An abandoned cyanide mill is now a haunting magnet for graffiti and illegal parties.

Odd outsider art installations surround a Gold Rush-era ghost town.

An eatery for UFO seekers on the Extraterrestrial Highway.

Towering basalt columns, a creation of fire and ice.

This former open-pit manganese mine is now a massive graffiti canvas.

Rich red almandine gemstones are waiting inside the volcanic rock strewn across this eastern Nevada hillside.

Two well-preserved charcoal kilns survive in a remote part of eastern Nevada.

Narrow slot canyons in a badland eroded into soft sedimentary rock provide an otherworldly landscape in this remote Nevada state park.

One of the best-preserved early 20th-century ore-processing mills in Nevada is maintained in a state of arrested decay.

A Nevada mining boomtown that ran out of silver and luck.

The longest living non-clonal organisms on Earth.