The earliest church on this location in Tofta was probably built during the end of the 12th century. The oldest part of the presently visible church is the tower. The nave and choir both date from the middle of the 14th century. The church walls display fragments of medieval frescos that were found during a restoration in 1958-1959. A few medieval stained glass windows are likewise preserved in the church.
Of the furnishings, the baptismal font is the oldest, dating from the 12th century and richly sculpted. It was probably made for the earliest church. The high altar has a retable from the 14th century, probably made in Lübeck. Two other wooden sculptures from the same century are also preserved in the church, one of the Virgin Mary and one of St. Olaf. An unusually well-preserved medieval bench also stands in the church. In the floor of the choir is a gravestone, made for a farmer and his son who were beaten to death in 1340. The pewsand the pulpit date from the Baroque era.
In 2004, an extremely well-preserved mail coif was discovered in a room in the tower during cleaning of the church. Reputedly it is one of the most well-preserved mail coif ever found in Europe, second only to a similar one displayed at the National Museum of Scotland. It may be connected to a civil war that was fought on the island in 1288. The mail coif is now displayed inside Tofta 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.