The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

The world's longest known cave system.

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

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

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

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Elevated freight railway turned wildly successful urban park.

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

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

Less a museum than a bizarre fantasy world created by artists and engineers.

The second largest roadrunner in the world stands 11 feet tall in his West Texas town.

Symbolic attempt to overcome the issues of life.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

Elephant seals and sea lions have turned the abandoned buildings on this island into their endangered love shack.

Thousands of turbines whir at at the origin of North American wind power.

A spring-fed pool so deep it's used for scuba diving as well as swimming.

Minimalist modern art on a repurposed military base in rural Texas.

A Prada store in the West Texas desert that is never open for business.

One woman's Viking Castle on Lake Tahoe.

A land of debatable treasure.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

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