This beautiful system of tunnels built into natural rock serves as a centuries old plumbing system.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

Putrefaction plateaus in Iran, where the dead were sent for decontamination before going to their final resting place.

The palace of the King of Kings, burned by Alexander the Great.

Marked by the hand of the explorer Henry Morton Stanley.

Named after a legendary garden called Eram in southern Arabia, built by order of Shaddad, an Arab king who wanted to compete with Paradise.

Burial site of a Jewish prophet revered in Iran.

A dreamy mausoleum honors Persia's most famous poet.

The hottest, driest, and most scenic desert on Earth.

This ancient burial site is believed to be one of the first earthquake-protected structures in the world.

In this tiny Iranian town playing on the roof isn't just encouraged, it's the only place to go.

17th century mosque for Shah Abbas' harem.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.