Some basilicas, such as St. Peter's and Saint Paul Outside the Walls, were outside the Aurelian Walls, and thus easy targets. They were "filled to overflowing with rich liturgical vessels and with jewelled reliquaries housing all of the relics recently amassed". The most important among them were the golden cross erected above the alleged tomb of Petrus, the so-called "Pharum Hadriani", and the silver table donated to the church by Charlemagne, and adorned with a representation of Constantinople. As a result, the raiders pillaged the surroundings of the city and desecrated the two holy shrines. Some historians believe the raiders had known exactly where to look for the most valuable treasures.