English: Artist's illustration of the remaining structures of the Temple of Apollo. The temple dates back to the second century BC. When Pompeii became a Roman colony in 80 BC, the temple was transformed into a Capitolium dedicated to the Capitoline Triad of Apollo, Juno, and Minerva. Placed upon a high podium, approximately ten feet tall, its axis formed the formal axis of and focal point of the Forum; it had two series of double columns dividing it longitudinally, typifying a Greek influenced Roman temple, and its back wall was veneered in marble.