Odd stone and concrete monuments in the "Poet of the Sierras" eclectic folly garden.

An enchanting tunnel of cypress trees leads to an old morse code station still used today.

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

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

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

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

Massive prehistoric mammals used these stones as oversized scratching posts.

Built by the inventor of the radio, this abandoned hotel has housed early radio employees, military men, and a dangerous cult.

This abandoned boat was left in place thanks to its rotting beauty.

'Cause the fence start shaking, the earth was quaking.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

A poignant memorial to a young boy whose death spurred a dramatic increase in organ donations in Italy—dubbed the "Nicholas Effect."

Monumental sculptures of Patrick Amiot, constructed from debris, detritus, and determination.