The Basilica of Saint John Lateran is the oldest and highest-ranking basilica in the Catholic Church, located in Rome, Italy. It serves as the official ecclesiastical seat of the Pope, making it a significant religious site. The basilica was originally built in the 4th century and has undergone various renovations over the centuries, showcasing a blend of architectural styles. The basilica is dedicated to Saint John the Baptist and Saint John the Evangelist. It features stunning artworks, including mosaics and sculptures, and is known for its impressive façade and grand interior. The basilica is also home to the Lateran Palace, which was the residence of the Popes for many centuries.