Baalbeck(Baalbak, Heliopolis, the City of the Sun) is a town in the Beqaa Valley in Lebanon. It is famous for its exquisitely detailed yet monumentally scaled temple ruins of the Roman period. It is Lebanon's greatest Roman treasure, and it can be counted among the wonders of the ancient world, containing some of the largest and best preserved Roman ruins.

The history of settlement in the area of Baalbek dates back about 9,000 years, with almost continual settlement of the tell under the Temple of Jupiter, which was probably a temple since the pre-Hellenistic era
The gods worshiped by Imperial Rome were, the triad of Jupiter, Venus and Bacchus.
Baalbeck, Heliopolis, was one of the largest sanctuaries in the Roman empire.
Baalbeck is actually home to the annual Baalbeck International Festival.
The town is about 85 km (53 mi) northeast of Beirut.