The wooden church of Tohmajärvi the oldest church in North Carelia. The church was built in 1756 and the bell tower couple of years later. The altarpiece is painted by Mikael Toppelius. The location on the small peninsula is one of the most beautiful church sites in Finland.
Other monuments in church grounds are a memorial to those who fell and were left behind in Carelia, (now Russian Republic of Karelia) and Bishop Eino Sormunen's gravestone and a memorial to the people of Tohmajärvi who died of hunger during 1865-68.
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.