Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

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

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

A giant Troll lurks under one of Seattle's oldest bridges.

This former coal gasification plant found a curious second life as a popular public park.

A walk through the historic city center, under the streets of Seattle.

The ghost town that ended up on Ebay.

One of the ghostly stops along Route 66.

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

The ruins of the castle that chemicals built.

A museum dedicated to the history and exploration of both popular music and science fiction.

The liveliest ghost town in the state.

Graffiti-covered ruins that were once part of a farm owned by a mental hospital.

The remnants of a failed socialist commune can still be found just off a California highway.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Continuing the tradition of the dime museum in style.

A dry lake is what remains of a community founded on a real estate scam.