Yale University's home for rare works, including the mysterious Voynich Manuscript.

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

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

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.

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

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

At this hidden studio, the dying art of taxidermy is alive and well.

A dollhouse full of taxidermy rodents, each one handcrafted and given a sordid past.

This shop specializes in oddities and Victorian-inspired wonders.

Its buzzing collection honors vibrator history.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

A 140-year-old castle with underground caves hidden in San Francisco.

A Seussian sculpture made of brass instruments.

A huge musical instrument played by the ocean.

A psychedelic labyrinth on the San Francisco bay.