Relics of the 1894 Midwinter Exposition continue to delight visitors today.

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

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Olfactory delights in San Francisco's Botanical Gardens.

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

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

This shop specializes in oddities and Victorian-inspired wonders.

Furniture tries to escape an abandoned building in San Francisco.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

See massive fossils that are over 200 million years old in northeastern Arizona.

Crumbling remnants of what was once a booming town full of silver.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

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

These aggressively sustainable art homes look like something out of 1970's science fiction.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

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

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

"I did this all while you were watching TV."

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.