The ancient tomb acts as a calendar that keeps perfect time.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

Megachurch turned Catholic church comprised of 10,000 glass panes.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A battle between nature and architecture in the Cambodian jungle.

The World's First 24 Hour Coin-Operated Art Gallery!! Plastic, Styrofoam, and Elvis--If you can't get rid of it, you might as well worship it!!

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Chewing gum tycoon's memorial lies perched over wife's botanical gardens on Santa Catalina Island.

Oakland's beautiful monumental cemetery.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

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

It's not your typical library, memorial, or book store.

A museum dedicated to the alleged Roswell Incident.

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

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