A shape-shifting buy-sell-trade bookstore, born to Beatnik Era spirit.

A library built during San Francisco's pioneer times is a student's retreat, bibliophile's sanctuary, and chess player's delight.

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

An abandoned, unfinished mansion on grounds strewn with lava rocks.

Dive bar built out of the remains of a whaling ship.

The unbelievably opulent home built for an infamous newspaperman.

The remains of a ruined mansion memorialize the 1906 earthquake.

An extensive collection of ancient Egyptian artifacts and mummies.

Tiki luxury on Nob Hill.

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

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

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

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.