Today, 29 June, is the Feast of Saints Peter and Paul, which has been celebrated in Rome since at least the 2nd century. Since the Reformation, there has been a debate as to whether Peter was ever in Rome at all. Fifteen years ago, the Roman Institute and the Classical Studies Section of the Görres Society organised a conference on this topic in Rome and Freiburg.
These conferences gave rise to one of the Institute’s best-selling books, the volume "Peter and Paul in Rome" (Herder, 2012). The volume is apparently now out of print and cannot be found even on the second-hand market.