St. Birgitta Church, which lies by the bridge crossing the river of Nykarleby, is one of the most famous sights of the town. The church was built in 1708 and is considered one of the most beautiful in Ostrobothnia. The ceiling paintings in the church date from the 18th century and are the work of Daniel Hjulström and Johan Alm. The paintings on the windows behind the altar were painted by Lennart Segerstråhle in 1940. The church also has a Thelin organ from 1786.
Reference: Uusikaarlepyy municipality
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.