A short hike into the mountainside forest reveals a decaying 1890s town.

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

This dilapidated ship carcass covered in trees is a striking sight.

A cave interior in the shape of the ancient rhinoceros, created by lava cooling around its carcass.

This large Sitka spruce that appears to be floating in mid-air, has defied logic for years.

Legend says that these tall basalt pillars are the petrified wives of a trickster god.

An enclosed rotunda at the Henry Art Gallery in which viewers can look up and see the uninterrupted sky.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

An extraordinary mixture of natural beauty and man-made phenomena.

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

A rococo retro-futurist future-rustic vernacular between yesterday’s tomorrow and the future that never was.

This contorting sculpture is the tallest in San Francisco.

A library and museum dedicated to typography.

An overlooked and unassuming engineering marvel.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

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.

This Cold War siren is one off the last of its kind still standing with its immensely powerful original horn.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

This scenic gorge is named after one of the most famous Bigfoot attacks in pseudohistory.