St Paul Outside the Walls, also called the Basilica of Saint Paul Outside the Walls, stands on the outskirts of Rome. Surrounded by a mostly modern and unremarkable neighborhood, the basilica offers a striking contrast with its grand architecture and deep history.
This enormous basilica is not the original structure. The ancient basilica, one of Rome's earliest Christian sites, suffered a devastating fire in 1823. What visitors see today is a careful and faithful reconstruction, completed in 1854. Despite the destruction, dedicated efforts saved several parts of the old interior. These rescued pieces have been painstakingly restored, allowing a glimpse into the artistry and devotion of earlier centuries.
Afternoon tends to be a quieter time to explore, as large tourist groups are less common later in the day. One of the most enchanting areas is the medieval cloister, which managed to survive the fire. Its peaceful atmosphere and historic details stand as a reminder of the basilica’s long past.
Source - https://en.wikipedia.org/wiki/Basilica_of_Saint_Paul_Outside_the_Walls