A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

The atmospheric road was never meant to be so creepy.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

The sacred shrine of the Yazidis.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

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

An endless sea of white conical domes.

Egyptian treasure trove of fossils documenting the whale's transition from land mammal to sea creature.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

The largest known Ancient Egyptian obelisk.

Early Islamic mosque with several strange conical domes.

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

Founded in 670, this ancient mosque is an architectural time portal.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

A 15th-century granary that played the role of futuristic slave quarters in the world of 'Star Wars.'

A beautiful oasis town dating back to the Roman period still serves as reprieve from the brutal summer sun in Libya.

Founded as a refugee camp, now a popular tourist spot.

The oldest known university in the world is in Fez, Morocco.

Crumbling necropolis set high above Fez.

Traditional 11th-century outdoor tannery.

The other side is actually green.

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