This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

Cathedral carved out of salt, located a mile below the Earth's surface.

This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

An vast warehouse of everyday treasures in Berkeley, CA.

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

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

Radioactivity still cause for concern at this urban explorer's paradise.

Playable, historic pinball machines fill this Alameda museum.

Neoclassical Revival mansion and set of horror cult classic Phantasm.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.