The Benedictine Territorial Abbey of San Michele Arcangelo has been existed at least from 1078 and was probably built in the 5th century. The benedictine Abbey Church (12th century), dedicated to St. Michael, has a notable portal and a Norman-style bell tower with mullioned windows. The Norman lord Humphrey of Hauteville and his son Rudolph made large donations to the abbey. In 1484, after joining the Benedictine Congregation of St. Giustina from Padua, the abbey was enlarged and restored in Renaissance forms.
Afterwards it decayed due to numerous wars ravaging the country in those years. Renewed starting from 1590, it received a cylindrical cupola in 1650. The monks abandoned the abbey in 1784.
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.