This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The most powerful waterfall in all of Europe.

This elegant arc of a waterfall marks a religious turning point.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

The colorful, smiling concrete silos of Vancouver.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

Collection of vintage trailers double as hotel rooms.

A spiritual vortex among the red rocks in Sedona.

Limestone caves with spectacular showcase chambers.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

New Zealand's epic shrine to all things puzzling.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Come for the flowers, stay for the bats!

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

A miniature view of the park, caught in time.

Depicting scenes of everyday life - and specific individuals - in Great Depression era San Francisco.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.