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

The 10-foot-wide Long Beach home was built on a dare.

These four islands right offshore have waterfalls, colorful lights, fancy buildings, and a secret purpose.

The sun acts as a key that only fits this giant keyhole twice a year.

A treasure hunter's tiny bar, harboring celebrities since 1959.

The site of murders and Satanic cult gatherings.

This park is home to well over 100 handmade birdhouses.

This beautiful ridge-top trail is dotted by tiny homes apparently built by a group of itinerant fairies.

This 75-year-old Shakespearean sculpture is painted by a local artist for every season.

An eccentric folk art landmark made out of discarded bottles by an inspired "grandma."

An Old West film set seen in countless TV shows and movies is open for the public to explore.

A former hardware store near Yerba Buena is the official home of California's history.

The original place where water met land in the City by the Bay is outlined in brass.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

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

A speck of nature and art in one of San Francisco’s most notorious neighborhoods.

A Barbary Coast watering hole built into a Gold Rush shipwreck.

Half of a house.

The neighborhood shop is a sort of tiny cactus museum full of exotic specimens you can take home.