Hannas Church was likely built during the latter part of the 12th century and possesses a well-preserved medieval character. The original church was a typical Romanesque structure with a semi-circular apse, choir, and nave. In the 15th century, the church was vaulted, and a robust stair-gable tower in the west, along with a porch in the north, were added.
The benches feature old folk paintings and are marked with farm numbers. The church's oldest item is the richly sculpted baptismal font by Sighraf. The font is as old as the church itself, adorned with biblical figures on the base and scenes from the Bible on the basin.
The altarpiece dates back to 1651. Additionally, there is a triumph crucifix from around the year 1300 in the church.
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.