A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A musical instrument played by the sea.

A couple turned their front yard into an artistic masterpiece.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

An invitation-only museum of items natural and bizarre, arcane and exotic.

Furniture tries to escape an abandoned building in San Francisco.

This surreptitious shop is only open five hours per week.

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

This print shop boasts one of the largest pinball arcades in San Francisco.

Over 315,000 preserved amphibians and reptiles in jars.

The grand, column-fronted, sculpture-adorned home of the ambitious digital library.

Russian history in San Francisco.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

A hidden subterranean installation offers a view of the sky.

In this century-old literary safehouse, print is alive and well.

Tiki luxury on Nob Hill.

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

A huge musical instrument played by the ocean.

A 9 year-old boy’s elaborate cardboard arcade in his father’s used auto parts store.

This hands-on math museum believes in turning concepts into constructs.

An enchanted arts space which assumes infinite identities.

Inside this clubhouse is a cinephile's paradise.

L.A.'s oldest operating bowling alley is a beautifully restored homage to its speakeasy days.

A monthly street "service" of handmade puppets and live original puppets, whose devotees profess has the power to change lives.