Gislöv Church chancel and naves dates back to the 1200s, and the tower was built in stages between the years 1760-1824. The original font descends from year 1656 and is the oldest inventory in the church. In year 1936 the vaults were reconstructed. They are richly decorated with frescoes and date from the 15th and 16th centuries. The renovation restored the church almost entirely in the condition it had been 500 years earlier. In the triumphal arch hangs a crucifix that descends from the 1400s. There is north of the church a graveyard considerably older than the current church.
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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.