The ghostly remains of an accidental sea.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

A popular winter vacation destination for migrating monarch butterflies.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Oldest building in California still in use.

Megachurch turned Catholic church comprised of 10,000 glass panes.

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

A multimedia experience that chronicles the atrocities of racism.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

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

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

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

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

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

A museum dedicated to the history and exploration of both popular music and science fiction.

A wall of chewing gum moonlights as collective art.

The legendary building that needed ghostly approval before being built.

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