From the centre of town, follow either Káptalan or Janus Pannonius utca towards the pristine white Peter and Paul cathedral. Topped with all 12 Apostles, it is built on an epic scale inside. Nearby at Szent Istvan tér 17 (in the gardens just below the steps to the cathedral) is the Cella Septichora visitor centre, giving access to a wealth of Roman early Christian archeological remains. Pécs fell under Roman rule as the empire expanded into the Balkans in the second century, and became Christian with the conversion of the Emperor Constantine in 313 AD. The excavated rooms include the Peter and Paul burial chamber and a Christian cemetery site, and visitors can get a 360-degree view through glass panels placed above, below and on the side of the chambers.