Övraby stone church was built around the year 1100 to the site of older church. There was also a Dominican monastery nearby in or around 1260. Halmstad moved in the 1320s to its present location and the old settlement came to be known as Övraby. The Swedish army’s ravages in the 1560s during the Northern Seven Years' War meant the end of “the upper village”. The church was burned to the ground and the site abandoned. The ruins were excavated by archaeologists in the 1930s.
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.