The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

A free, public museum dedicated to the fascinating science of sight.

Fonts are born and bred here at the oldest letterpress type foundry in the United States.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

A museum befitting the city responsible for supplying the majority of the world's LSD.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

A huge musical instrument played by the ocean.

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

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

Rippling sand dunes frozen in the Arizona rock.

The world's largest military aircraft cemetery.

America's only nuclear missile silo open to the public.

Explore 10 acres of environmental sculptures.

A world-class observatory in the California desert.

The final resting place of a space program monolith.

Resting place of Hollywood's immortals is also site of summer film screenings.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

An eclectic trailer park retreat in the middle of the California desert.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.