In the reign of Augustus the Roman generals had been defeated in their attacks on Arabia; but under Trajan, when the Romans were masters of all the countries which surround Arabia Nabataea, and when Egypt was so far quiet that the legions could be withdrawn without danger to the provinces, the Arabs could hold out no longer, and the rocky fastness of Petra was forced to receive a Roman garrison. The event was as usual commemorated on the coins of Rome; and for the next four hundred years that remarkable Arab city formed part of the Roman empire; and Europeans now travelling through the desert from Mount Sinai to Jerusalem are agreeably surprised at coming upon temples, carved out of the solid rock, ornamented with Corinthian columns of the age of the Antonines.
In the twelfth year of this reign, when Lucius Sulpicius Simius was prefect, some additions which had been made to the temple at Panopolis in the Thebaid were dedicated in the name of the emperor; and in the nineteenth year, when Marcus Rutilius Lupus was prefect, a new portico in the oasis of Thebes was in the same manner dedicated to Serapis and Isis. A small temple, which had been before built at Denderah, near the great temple of Venus, was in the first year of this reign dedicated to the Empress Plotina, under the name of the great goddess, the Younger Venus.