olic Church, it has claims as the Mother Church of the world. For this reason, St. John Lateran is the only church that is also known as an archbasilica. St. Peter's Basilica, also called the Vatican Basilica, is a major pilgrimage site, built over the burial place of Peter the Apostle. St. Paul Outside the Walls, also known as the Ostian Basilica because it is situated on the road that led to Ostia, is built over the burial place of Paul the Apostle. St. Mary Major, also called the Liberian Basilica because the original building (not the present one) was attributed to Pope Liberius, is the largest church in Rome dedicated to the Virgin Mary. The four major basilicas, together with the minor basilica of St. Lawrence Outside-the-Walls, were formerly known as patriarchal basilicas as they were associated with the five ancient patriarchal sees of Christendom (see Pentarchy). Upon relinquishing the title of Patriarch of the West in 2006, Pope Benedict XVI renamed these basilicas from patriarchal basilicas to papal basilicas. St. John Lateran was associated with the Pope, the Bishop of Rome and the Patriarch of the West. St. Peter's Basilica was associated with the Patriarch of Constantinople. St. Paul Outside the Walls was associated with the Patriarch of Alexandria. St. Mary Major was associated with the Patriarch of Antioch. St. Lawrence Outside the Walls was associated with the Patriarch of Jerusalem. Nominally, the respective patriarchs could avail of accommodation attached to the basilicas should they have business in Rome. These assignments, however, are now purely historical. In some cases, more than one patriarch holds the title for the same patriarchate. For example, each of the Catholic pat