A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

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

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

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A beautiful geyser under environmental threat.

Dramatic river bend surrounds a natural red-rocked pedestal.