Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

Homemade outdoor church and sculpture garden decorated with glass shards.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

Commonly referred to as the most photographed Victorian home in the United States.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

A shape-shifting buy-sell-trade bookstore, born to Beatnik Era spirit.

An vast warehouse of everyday treasures in Berkeley, CA.

A decommissioned Naval base now rents itself out for people who want to blow stuff up.

Playable, historic pinball machines fill this Alameda museum.

A crumbling Beaux Arts monument to the Bay Area's age of rail.

Antiques by the Bay.

This (occupied) house is 10 feet wide and full of spite.

Dive bar built out of the remains of a whaling ship.

International delicatessen has been owned and operated by the same family for more than 110 years.

Oakland's beautiful monumental cemetery.

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

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

The fossilized remains of ancient California redwoods.

This massive redwood tree has a hole in the base big enough to drive through.

From carts to cars, this leftover Roman bridge in France has managed to survive for centuries.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.