Visit Palmyra

Black-basalt Roman theatre town.

A fortified hill inhabited for 5,000 years, its medieval stone ramp and gate towering over the old city.

The great Crusader castle, UNESCO-listed.

A vaulted iron-roofed bazaar running to the Umayyad Mosque, its ceiling pierced by French bullet holes.

One of the oldest continuously inhabited cities: the Umayyad Mosque, Straight Street and the Souq al-Hamidiyah.

Stand among the cloud-wrapped ruins of Machu Picchu, the 15th-century Inca citadel perched high above Peru's Sacred Valley

Walk the streets of a Roman city frozen mid-life by Vesuvius in 79 AD — ruts, frescoes, bakeries and all

Explore the ancient cliff dwellings and archaeological sites of Mesa Verde National Park in Colorado, USA