The Synagogue in Straubing is an Ashkenazi synagogue built in 1905-07, restored in 1988. This stone building still serves as a synagogue.
The parish church of St. Paul dates back to 1050, making it the oldest parish church in Passau. After being destroyed by fire in 1512 and 1662, the present building was built in 1678. After reconstruction in the 19th century, the only tower of the church stood much higher in the sky of Passau. However, due to the dangerous condition of the tower, it was demolished in 1950 and rebuilt with about a third of its height.
Passau Cathedral is a Baroque church that was built between 1668 and 1693 on a site that has seen churches since at least the 8th century. An early Gothic cathedral was located here between 1221 and 1313, but was destroyed by fire in 1662, resulting in the construction of a new cathedral. Of the early buildings, only the eastern part of the late Gothic style has survived. The cathedral has a richly decorated Baroque interior, containing frescoes by Italian artists.