The original name of the church was the Basilica Martyrum, where many martyrs who were persecuted by Rome were buried, as was Louis II, emperor of the Roman Empire. The church was first built at the end of the 4th century A.D. and rebuilt in 1080. Because of many repairs, it was impossible to find the place where the martyrs were buried. In addition, in architecture, the early use of brick vaults to replace wood roofs which are easy to fire, the new method of cross rib arch not only changed the structure of traditional churches, but also changed the visual perception of architectural space, which has an important guiding role for the emergence of Gothic church a hundred years later.