This 17th-century structure is a beautiful testimony to traditional Persian architecture

17th century mosque for Shah Abbas' harem.

The only quarter of the Old City not dedicated to a major world religion.

The tallest waterfall in the Judean Desert is named for its connection to a biblical figure.

A magical oasis in the middle of the Negev Desert.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

Descend 2,030 years into the past in an ancient tunnel built to support Jerusalem's most famous wall.

A serene desert oasis speckled with ancient artifacts.

Charnel house at the foot of Mount Sinai.

The deadliest diving spot in the world is also a stunning geological marvel.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

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

Named after the Goddess of Harvests, Annapurna is the deadliest member of the Eight-thousanders club.

This historic square in Nepal is home to temples dating back to the third century.

Sacred Buddhist home of some spiritual monkeys.

A sober museum housed in the original administrative building of one of Stalin's largest gulags.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

An entertainment center in a huge transparent tent.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.

In this desolate valley resides a gorgeous set of rocks sporting a technicolor design.

Within the Dadès Gorge, amazing vistas and towering cliff faces can be seen at each new curve and bend in the road.

Traditional 11th-century outdoor tannery.

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 largest madrasa in Morocco once housed more than 900 students within its exquisite walls.