In the Middle Ages the Vaeggerløse church was dedicated to St Olaf. The chancel and nave from the late Romanesque period were built in brick on a profiled plinth with pilaster strips on the corners. The chancel's pilaster strips now only remain on its southwest corner. Originally there was also an apse which was torn down but later replaced during the restoration work in 1861 by the Hamburg architect Ernst Heinrich Glüer. On that occasion, the south door was bricked up but the door frame remains. The tower is from the Late Gothic period.
The chancel and the nave have a flat-beamed ceiling. The altarpiece painting of Christ Resurrected is by Heinrich Hoffman (1868). The pulpit from c. 1640 is the work of Jørgen Ringnis, similar to that in Aastrup Church. Its large shell-framed panels depict the four evangelists. The Early Gothic crucifix on the north wall of the nave, c. 175 cm high, is from the late 13th century.
In 1906, frescos from c. 1520 were discovered in the tower vault. Painted on a thin layer of whitewash, they were in poor condition. The south segment depicted the Adoration of the Magi, the fresco on the east segment could not be identified and that on the north side showed Christ's entry into Jerusalem followed by haloed apostles. The fresco on the west segment, depicting a lively scene of the Supper at Emmaus, was in good enough condition to be preserved. Christ sits with two distinguished gentlemen at a finely set table with bread and a spotted leg of venison. There are two servants, one carrying a bowl, the other pouring wine from a jug. The woman lying on the floor in the foreground is perhaps Mary Magdelene. The colours are grey, russet, ochre and green.
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.