The Basilica di San Paolo fuori le Mura is one of the four major basilicas in Rome, Italy. It is located outside the ancient city walls and is dedicated to Saint Paul the Apostle. The basilica was originally built in the 4th century and has undergone several renovations, particularly after a fire in 1823. The structure features a grand façade and an impressive interior adorned with beautiful mosaics and artwork. It is known for its large nave and stunning columns, making it a significant example of Early Christian architecture. The basilica also houses the tomb of Saint Paul, attracting many pilgrims and visitors each year.