Hardeberga Church was built around the year 1200. It was enlarged and the vaulted tower and porch were added in the Middle Ages. The current tower dates mainly from the restoration made in 1909-1910.
The altarpiece dates from the early 17th century and the font from the Middle Ages. The decorated roof was painted by Godfrey Pettersson in 1909. In 2003 archaeologists found the previously unknown rune carving from the north wall.
References: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.