The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

Stay in a room with a view... of the bottom of the ocean.

This unauthorized stone mermaid was secretly carved out of public stone before being permanently preserved.

A natural gas leak provides a flickering flame beneath a waterfall.

The ghost town that ended up on Ebay.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

The Boston square dedicated to the dark poet who was born nearby.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

A 300-ship graveyard, with a few still visible at low tide.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

Visit this playground of waterfalls, caves and sinkholes.

The only diamond mine in the world where you can keep what you find.

An inconspicuous footbridge beloved by San Diego locals.

Sister store to the Echo Park Time Travel Store.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

Nondescript elevator doors open to reveal a stunning, surreal world.