God's Saharan sandbox of wrath.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

The other side is actually green.

Mosaics, storks, and brothels—this ancient city has it all.

This giant Christ took first place in South America's religious arms race.

Mysterious Incan ruins on a tiny island in Lake Titicaca.

This red lake 4,000 meters above sea level is home to rare flamingos.

Bolivia's needle-like rock formations.

Death road of Bolivia.

A valley of unique erosion patterns lends to a view like nothing on Earth.

A seemingly endless landscape of pure salt stretches far across Bolivia.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

"The Most Boring Road in the State."

This little barrel-shaped cottage by Lake Superior was once a cartoonist's summer retreat.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

Decorated by local artists, the city's utility boxes have become three-dimensional canvases.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

A mysterious taxidermy man-beast of the seven seas.