The current stone church in Hemse dates mainly from the 13th century. However, about a century earlier there was a stave church built at the same location. The surprisingly well-preserved stave church was found by chance under the floor of the stone church during a restoration in 1896, where the wooden planks of the church had served as an earlier floor. The wooden church, known as Hemse stave church, is the most well-preserved early stave church found in Sweden. There have been plans to erect a replica of the church somewhere near its original location.
The stave church was probably replaced by the presently visible Romanesque stone church as it became too small for the congregation. The nave and choir were built first, and the tower was added later.
During the aforementioned restoration the church was rather insensitively restored inside. A later restoration was carried out in 1962–63.
The church is a relatively homogeneous Romanesque edifice. Inside, it is decorated by medieval frescos. The oldest of these are in the tower, and depict centaurs assaulting thetree of life. Under it are two inscriptions in Latin. In the choir and the apse are depictions of the Last Judgment dating from the 14th century and in the nave, frescos from the middle of the 15th century depicting the Passion of Christ and two saints: Saint George and the Dragon and Saint Martin. There is also a rune inscription on the western wall of the choir, a repetition of the futhark or runic 'alphabet'.
Among the furnishings, the triumphal cross from the end of the 12th century is noteworthy. The baptismal font has a Romanesque foot but a later (14th century) basin. The church bell is from the first half of the 15th century.
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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.