The Temple of Jupiter, Capitolium, or Temple of the Capitoline Triad was a temple in the Roman city of Pompeii in Italy. At the beginning this temple was dedicated to Jupiter alone, it was built in the mid 2nd century BC at the same time as the temple of Apollo was being worked on - this was the era at which Roman influence over Pompeii was at its height and so Roman Jupiter beat out the Greek Apollo and Jupiter(, Juno, and Minerva) in towns newly taken over by the Romans. This was also true for Pompeii, where the Temple of Jupiter that was already there was enlarged and made more Roman when the Romans took over.