Uvdal Stave Church was originally constructed just after the year 1168, which we know through dendrochronological dating of the pine tree used during the construction. The logs were not completely dry when the construction took place. The church was made on top of the remains of previous church on the site, thought to have been made with the use of imbedded corner column technology at the beginning of the 11th century. This we know from an archeological excavation that took place during 1978. Churches made during the 12th century were usually very small, perhaps no more than 40 square meters in their footprint. They were therefore often expanded, even during the Middle Ages and certainly just before and after the Reformation, which took place during 1537 in Norway.
The nave of the church was first expanded to the west during the Middle Ages, when the original apse of chancel was also removed and the chancel itself elongated. Again, during that period, an extra center column was added to construction. The chancel was torn down again in 1684, when a new and wider chancel was made. This had the same width as the nave. Then, during the period 1721–1723, the church was made into cruciform. A new ridge turret had to be made, to fit the new cruciform. Later, in 1819, a new vestry was added to the north wall of the chancel. The exterior walls were panelled in 1760.
Benches with ornately decorated sidewalls were added to the nave in 1624. The oldest part of the interior was probably richly ornately decorated by painting during 1656, the expansions during 1684 and 1723. Two scary halfmasks are quite visible on the poles of the chancel, and according to myth they were able to capture demons.
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.