In Tucson a giant metal snake helps pedestrians cross a busy highway.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

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

San Francisco's newly reopened hands-on science museum.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Two rocks in a perpetual kiss and one of "the most romantic spot in America."

An icy lake tucked among jaw-dropping alpine panoramas.

Trek up this glacier before it disappears.

The longest hedge maze in the world.

A picture-perfect town, perfect for blowing up.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

This massive crater in the middle of nowhere was used to train astronauts for moon landings.

Potential high level nuclear waste storage site for the next 10,000 years and beyond.

Only intact Ichthyosaur skeleton in the United States.

The longest living non-clonal organisms on Earth.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

Climb right into the heart of this colorful Iceland volcano.

Tiki luxury on Nob Hill.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

Rising from the sea like a stone monster.

This Seattle joint serves food inside an old train car once used by FDR.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.