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

The tallest bridge in California was constructed for a project that was eventually cancelled.

San Francisco's newly reopened hands-on science museum.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

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

A huge musical instrument played by the ocean.

Apparently, the whole cosmos emanates from this plain concrete tower.

Three witches are said to be buried beneath these unmarked concrete graves.

A multi-storied adobe complex has been inhabited for more than a thousand years.

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A tunnel with windows, so you don't miss out on the impressive views.