Old Gildeskål stone church was built around the year 1130. In 1851, a new law was passed that said that all rural churches had to be able to fit at least 30% of the parish members in the church building. Since this church could only seat about 130 people, it was too small, therefore a new church had to be built for the parish. It was decided that the new church would be built on the same site, just west of the old church. The new Gildeskål Church was completed in 1881 and it seated about 750 people. The interior dates mainly from the 18th century.
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.