There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

Early prototype for Frank Lloyd Wright's Guggenheim.

San Francisco Bay's ghost town.

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

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

Playable, historic pinball machines fill this Alameda museum.

A 300-ship graveyard, with a few still visible at low tide.

A promotional sun clock on the site of San Francisco's great raceway.

This airfield played a key role in both World War II and the Cold War.

The longest burning light bulb in the world.

Successful artist residence program has filled this ranch with dozens of sculptures over the years.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Cows on a ranch are commonplace, scattered cow bones everywhere? Not so much.

The permanent home of a 1960s traveling museum of tiny historical dioramas.

Dothan, Alabama has been invaded by scores of anthropomorphic peanuts.

This ghost town houses the remains of Alabama's old state capital.