Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

A one-of-a-kind collection of a unique medium.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

This hands-on math museum believes in turning concepts into constructs.

The art and history of the velvet painting are on full display in this Los Angeles museum.

A castle that was built stone by stone by an eccentric journalist.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

Shop selling 500 flavors of soda has something for everyone.

Arcadia is home to a haven for nature geeks and 80s TV lovers alike.

Hundreds of trees made from glass bottles make up this forest on Route 66.

Abandoned Air Force base that has fallen into disrepair.

A small medical museum with a recreated doctor's office.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

A church of bones, decorated with 40,000 human skeletons.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

Contemporary art inspired by natural history and science drawing on ancient techniques in a modern world.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

The quaint little Vermont town played a quaint little Connecticut town in Tim Burton's "Beetlejuice."

Abandoned medieval hill town.

Mining town from the late 1890s, once home to Calamity Jane.

This old mining town, deep in the California desert, has a year-round population of one.

The ghost town that ended up on Ebay.

Despite repeated attempts to make it work, this former mining town is now nothing but dust and memories.