An abandoned film set location for a remote spaceport in a galaxy far, far away hides in the Tunisian desert.

A seemingly simple canyon that was the backdrop to a number of famous movies.

The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

An ancient burial ground believed to have been used for ritual sacrifice.

An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.

This museum in the famously blue neighborhood of Sidi Bou Saïd showcases a traditional Tunisian lifestyle.

One of few vertical lava tubes in the world accessible by foot.

On the cliffs of São Jorge in the Azores stand the remains of a lighthouse that was struck by a series of earthquakes.

Bits of flat terrain surrounded by cliffs make one of the most beautiful landscapes in the Azores.

Fossilized remains tell the story of the region’s past inside this small, unassuming museum.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

An Egyptian-revival style film house in Boise, Idaho.

Jail from the 19th century that was built by inmates.

A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

One of the largest wildlife refuges in the contiguous 48 states, it was instrumental in preserving the pronghorn antelope from extinction.

This spectacular fault escarpment, a popular hang-glider launch point, extends some 30 miles long and towers about 2,500 feet over the valley floors to the west.

Oregon's only closed-basin hypersaline lake, an important stopover for migrating waterfowl, is in danger of drying up completely.

At the base of Steens Mountain resides an otherworldly desert.

With a crest near 10,000 feet, this treeless fault-block mountain in eastern Oregon provides stunning views and spectacular glacial landforms.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

The Columbia Gorge Hotel sits as a beacon in the Columbia River Gorge and is also said to be haunted.

Boats and fish both find their way through this massive hydroelectric structure.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This old-fashioned roadhouse's quirky neon sign is as famous as its enormous dumplings.