Baalbek - The Pillars of Jupiter, Lebanon (137/418)

This Phoenician city, the seat of a worship to a triad of deities, was known as Heliopolis during the Greek period. It retained its religious function in Roman times when the sanctuary of Heliopolitan Jupiter drew thousands of pilgrims. Baalbek, with its colossal structures, is one of the most impressive examples of Imperial Roman architecture at its apogee.