The Acropolis of Baalbeck, in the Beqaa valley 85 kilometers from Beirut, is the largest and best preserved corpus of Roman architecture left to us. Its temples, dedicated to Jupiter, Venus and Bacchus, were built in the second and third centuries A.D. The ruins present a majestic ensemble: two temples, two courtyards preceded by propylaea (ceremonial entrances) and a boundary wall upon which Arab architecture has left its traces. Six immense columns still soar upwards from the holy place where the Temple of Jupiter once stood.