Places Gray Wants to Go

This underground oasis is one of North America’s most fascinating prehistoric places—and you can scuba dive in it.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

A clear blue swimming hole with hidden caves, still unexplored.

This charmingly homemade amusement park has been growing for 40 years.

A technicolor place of worship for Elevationists.

These eerie outliers of the lightning bug family glow a mysterious blue color.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Canyon walls shrouded in ferns.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This geothermal hot spring hides beneath a slowly growing mineral dome.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

A reproduction of earth's many biomes.

This woodland architectural installation acts as a camera obscura for the heavens.

One part antique store, one part curiosities hodge-podge.

This naturally-sourced hot spring is now home to a clothing-optional resort.

Less a museum than a bizarre fantasy world created by artists and engineers.

A mysterious castle built as a monument to lost love.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

A Bibliophile's Dream.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

The largest earthwork effigy in the world.