An amazing collection of fantastic reptiles, amphibians, spiders, and insects.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

An ominous concrete cube cuts a dystopian silhouette atop this California mountain.

A trail weaves through the verses of a poem illustrated by stone sculptures inspired by Native American pictographs.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

A sudden forest of traditional Papua New Guinean art works is hidden in a corner of Stanford University.

Golden Gate Park's historic collection of plants.

With the touch of a button, you can read a randomly selected short story.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

A hidden subterranean installation offers a view of the sky.

This shop and studio is dedicated to the art of the book, from letterpress to bookbinding.

In this century-old literary safehouse, print is alive and well.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A modern mechanical planetary system, part of a 10,000 year clock.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

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

Tiki luxury on Nob Hill.

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

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

Olfactory delights in San Francisco's Botanical Gardens.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

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

Its buzzing collection honors vibrator history.

The only theatre in the world constructed specifically for sound movement.