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

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

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

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

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

A winding path built in secret on the edge of the continent.

800 apricot trees honor Silicon Valley's agricultural history.

An Aladdin's cave of old Silicon Valley tech.

The garage at the childhood home of Steve Jobs was a hangout for the founders of Apple, even if they never built computers there.

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

A giant can of fruit cocktail is all that remains of what was once the world's largest cannery.

One of the largest Marian shrines on the West Coast stands rather unexpectedly in Silicon Valley.

The headquarters of the semiconductor giant has a 10,000-square-foot museum.

A life-sized mammoth sculpture marks the spot where the remains of a Columbian mammoth were discovered in 2005.