The Perniö Church was built in the 15th century, probably in 1460-1480. It's dedicated to St. Lawrence (as well as many medieval churches in Finland). The interior contains mural paintings made by the school of famous artist Petrus Henriksson from the end of 15th century. There are also seven limestone tombs inside the church. The belfry was erected in 1746.
National Board of Antiquities has named the church site as national built heritage.
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.