Its buzzing collection honors vibrator history.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

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

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

A hand-built folk art installation covered with messages of God's love.

The ghostly remains of an accidental sea.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

America's most famous piece of self-built architecture.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The legendary building that needed ghostly approval before being built.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

World's largest collection of serial killer artwork and other macabre exhibits.

A huge musical instrument played by the ocean.

The Flatiron Building's storied West Coast cousin is a lot more into religion.

The newsstand that never closes its doors—well, almost never.

An abandoned convention space that has been left to the homeless and the radical.

With statues of Nelson Mandela and Harvey Milk this monument has been called the Mount Rushmore of California.

A massive ultra-modern church presents a science-fiction view of Catholicism's inclusive future.

Oakland's beautiful monumental cemetery.

A restored 1920s cascade stairway provides one of the best views of Oakland's Lake Merritt.

This mysterious series of teeny guerrilla installations sheds a whimsical light on street art in Oakland.