Utti fortress was built by Russians in 1791-1792 as part of the South-Eastern Finland fortification system. It contained a main bastion system and two outer redoubts. It was meant to hold Swedish army until Taavetti fortress is occupied with reserves and ready to fight.
Only one battle was fought in Utti during the Russo-Swedish War in 1789. Utti lost its military value in 1809 when Finland was joined to Russia. It was disbanded quite soon. Today the main fortress is renovated and open for visitors.
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.