Baalbek is a town in the Bekaa Valley of Lebanon, altitude 1,170 metres (3,800 ft), situated east of the Litani River. It is famous for its exquisitely detailed yet monumentally scaled temple ruins of the Roman period, when Baalbek, known as Heliopolis was one of the largest sanctuaries in the Empire. It is Lebanon's greatest Roman treasure, and it can be counted among the wonders of the ancient world. The largest and most noble Roman temples ever built, they are also among the best preserved.
Towering high above the Beqaa plain, their monumental proportions proclaimed the power and wealth of Imperial Rome. The gods worshipped here, the Triad of Jupiter, Venus and Bacchus, were grafted onto the indigenous deities of Hadad, Atargatis and a young male god of fertility. Local influences are also seen in the planning and layout of the temples, which vary from the classic Roman design.
Baalbek is home to the annual Baalbeck International Festival. The town is located about 85 km (53 mi) north east of Beirut, and about 75 km (47 mi) north of Damascus. It has a population of approximately 72,000.
Further info: Wikipedia - Baalbek