A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

The wreck of a World War II cargo ship has become an unintentional time capsule at the bottom of the Red Sea.

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

Brightly painted boulders scattered throughout the Sinai Desert.

Even King Tut was intrigued by the glass of the Great Sand Sea.

The massive cave church of Cairo's Zabbaleen community is one of the largest Christian churches in the Middle East.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

One of the most well-preserved temples of ancient Egypt.

An endless sea of white conical domes.

Ozymandias’ time-keeping temple.

An ancient city exhumed from the depths of the ocean.

An otherworldly alpine pasture with its own unique microculture that recalls Middle Earth.

A miniature train-ride through Slovenia's largest cave system.

This massive subterranean fissure is known as the "underground Grand Canyon."

This abandoned Slovenian military barracks has become a punky-political art squat.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A preserved section of the Atlantic Forest is an important habitat for these critically endangered monkeys.

This somber statue remembers the enslaved women who were forced to nurse their owners' babies.

These small, spectacular monkeys are making a comeback after deforestation destroyed much of their rainforest habitat.

Modern pyramids built to channel positive energy have also fomented local tales of animal sacrifice.

This small Brazilian museum honors the work of a German biologist who studied the jungles for decades.

Known as the "Finger of God," a dramatic rock formation resembles a divine hand extending towards the heavens.

The massive gardens and office of a Brazilian sculptor.

This giant mural of Santa Muerte in downtown São Paulo reminds passersby of their own mortality.