St. Paul's Chapter Church was built by Bishop Burchard (who also built the first Worms Cathedral) in 1002. It was originally a three-naved buttress basilica.
A Dominican monastery was added in 1226. Also in the 13th century, the stone dome-shaped tower roofs were added in the Byzantine style of Jerusalem's churches. These make the church a visible monument to the Crusades.
The Pauluskirche was desconsecrated and the monastery destroyed in 1797 in the interests of secularization. In the decades that followed, the church was used as a warehouse, a barn and finally as a municipal museum (1880).
In 1929, Dominican religious life began again here and is still an active community. The resident monks conduct services, prayers and confession, and some also work as hospital or prison chaplains. The Pauluskirche was badly damaged by bombing on February 21, 1945, but through the support of local citizens it was rebuilt and back in service in 1947.
The present nave of the Pauluskirche was rebuilt in the Baroque era, but the remainder of the building is 11th-century Romanesque.
The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.