Bokenäs Old Church is one of the most well-preserved medieval churches in Bohuslän. It was founded at some point in the early 12th century, and has been in use since. Except for parts of the interior, the weapon house from the 17th century, and the tower from 1752, most of the church is original. The church is open to the public daily during the summer, and for pre-arranged visits during the rest of the year, due to maintenance costs.
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.