Constantine made major contributions to Roman art and architecture in the early 4th century CE. He erected the Arch of Constantine in Rome in 312-315 CE to commemorate his victory over Maxentius. Constantine also commissioned the Basilica Nova, or New Basilica, completed in Rome circa 312 CE. A monumental statue of Constantine set up in the Basilica Nova depicted him holding a cross-topped staff, reflecting his conversion to Christianity. Constantine's architectural projects in Rome and his use of Christian symbols in art helped to shape the transition of the Roman Empire.