When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

A masterpiece in Golden Gate Park by virtue of the artist’s debt.

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

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

One of the oldest reform schools in the United States, home to wayward boys such as Merle Haggard, now abandoned.

Dentist's hated concrete colossi are now beloved icons of the community.

The largest drain hole in the world.

Seven ceramic sculptures are scattered around this California college campus.

Outsider art or homage to aliens?

Special tunnels built so that frogs won't be killed when crossing the highway.

An eccentric home stands out in an otherwise average neighborhood with mosaics, mini topiaries, and kinetic sculpture.

I Street Bridge is the heaviest swinging center bridge in the United States.

A veteran Disney animator turned his gift for storytelling to a museum devoted to his love of a California city.

A tribute to the life and work of the beloved "Peanuts" cartoonist.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.