The Basilica di Sant'Apollonia in Classe is a historic church located in Ravenna, Italy. Built in the 6th century, it is known for its stunning mosaics and beautiful architecture, showcasing the Byzantine style. The church is dedicated to Saint Apollonius, the patron saint of Ravenna, and serves as a significant example of early Christian art and architecture. The basilica features a large apse adorned with intricate mosaics that depict religious scenes, including the famous image of Christ Pantocrator. Its serene atmosphere and historical significance make it a popular destination for visitors interested in Byzantine art and early Christian history.