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

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

Join the circus for a few lessons to learn clowning, acrobatics, and Chinese contortion.

The newsstand that never closes its doors—well, almost never.

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

The Flatiron Building's storied West Coast cousin is a lot more into religion.

The massive machine creates cracking displays of indoor lightning.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

Each August, one of the largest religious (and food) celebrations in the country is held in Boston.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

"Mock all and sundry things, but leave the saints alone."

Dim sum, served in a grand old theater.

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

A classic advertising icon immortalized in regal bronze.

Oakland's beautiful monumental cemetery.

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

This giant head is all that remains of a once proud statue that survived an earthquake but not a fall off of a wagon.

This downtown Dallas art installation is always on the lookout.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

Dozens of feral felines rule a segment of Hollywood's only graveyard.

The final resting place of a space program monolith.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.