The Pfaffenberg in Bad Deutsch-Altenburg performed the function of the town hill for the Roman provincial capital of Carnuntum in antiquity. On this rise,with its characteristic rural appearance,today destroyed by a quarry,the architects and master-builders of the Pannonian army set up a central provincial sanctuary for Jupiter Optimus Maximus and the imperial cult. The ruins and finds of the Temple District on the Pfaffenberg were saved for posterity by emergency excavations by the University of Vienna from 1970 to 1985. These excavations revealed hundreds of inscription fragments. Within the framework of the publication of the Pfaffenberg works, Prof. Ioan Piso (Cluj/Klausenburg) has taken on the difficult task of working through these inscription finds and evaluating them in historical terms. The results of this work presented in this volume are of major significance for the history of the Jupiter and imperial cult in Pannonia.