The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

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

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

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

Spiral labyrinth hidden in the hills above Oakland, CA.

According to the legend, this strikingly beautiful hill has miraculous healing powers.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

To find the "unicorns of the deep" you've got to go downstairs.

Little did a museum know, they possessed the last-known lunch wagon in existence.

One man's love for East Coast diner culture brought an entire eatery all the way from New Jersey to Colorado.

These pretty kitties killed and ate as many as 135 railway workers.

This historic hotel invented the chocolate brownie.

The upstairs reading room is packed with millions of rare books, literary manuscripts, and historical treasures.

This failed condo development was reborn as a street art hub.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

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

This forgotten beach house built to look like a Frank Lloyd Wright masterpiece overlooks a hidden beach.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

One Austrian's singular yard is now preserved as a folk art garden of concrete wonders.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

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

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.