Some basilicas are called "Ancient Basilicas". These have been called basilicas since Early Christian or Medieval times. It is their traditional name. Ancient Basilicas include "the Church of the Holy Sepulchre" in Jerusalem, "the Basilica of San Vitale" in Ravenna and "the Basilica of San Lorenzo" in Rome. The four other "ancient basilicas" of Rome are called the "Major Basilicas". Each "Major Basilica" has a throne for the pope and an altar that is specially for the pope to celebrate mass. No-one else can use that altar without the pope's permission. All the other basilicas are called "Minor Basilicas".