The Old Church of Jät dates from the year 1226. The wooden sacristy was made in 1733. The external belfry was built probably in the 17th century. It was damaged by fire in 1924 and restored in 1929. The interior is richly decorated by local artist Johan Christian Zschotzscher in 1749. The crucifix dates from the late Middle Ages.
There is a legend about Miss Eketrä, who was buried in the crypt. When they opened her grave several centuries later, her body was as well preserved as the day she died. Recorded information is available in Swedish, English and German.
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.