San Giovanni in Laterano, officially known as the Archbasilica of Saint John Lateran, is the cathedral church of the Pope and the oldest basilica in Rome. It serves as the seat of the Bishop of Rome and is one of the four major basilicas in the city. The church was originally built in the 4th century and has undergone numerous renovations over the centuries. The basilica is renowned for its stunning architecture, featuring a grand façade and an impressive interior adorned with beautiful frescoes and sculptures. It houses important relics, including the heads of Saint Peter and Saint Paul, making it a significant pilgrimage site for Catholics worldwide.