Fake rail crossings mark the site of an influential doctor's demise.

This remarkably simple jail went over a century without an escape.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

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

A massive volcanic plug is now a protected area that hosts a number of bird species.

It's not your typical library, memorial, or book store.

This municipal playground was co-created by the father of one of the most playful characters ever.

The first safe in this California town had to hold all the gold.

Seven ceramic sculptures are scattered around this California college campus.

The memorial to the victims of the Jonestown Massacre carries the names of 918 lost, including one name people wish wasn't there.

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

A vast city of the dead, where the deceased outnumber the living by more than a million.

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

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

An enormous illuminated figure dances on the Las Vegas strip.

A man-made island in scenic San Francisco Bay.

A monument to the love people have for their pets.

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

A huge musical instrument played by the ocean.

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

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Visible below the waves are memorials to the city's Gold Rush dead.

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

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