The most striking thing about entering the old town is the St. Petersburg Cathedral, the main representative of Gothic architecture in Bavaria and southern Germany, and the main church of the Catholic Regensburg parish. The church is as quiet as ever, everyone is silently visiting, and there is a lot of historical materials in the basement. was once destroyed by the fire twice and was rebuilt in 1273. The nave is 32 meters high and the tower is 105 meters high. The church has a total length of 86 meters and a width of 34.8 meters. There is a basement in the church, which can be lowered from the stairs. There are stone monuments and some leftover objects to understand. The church can watch an hour and learn a lot about Bavaria.