Heddal stave church is a triple nave stave church and is Norway's largest stave church. It was constructed at the beginning of the 13th century. After the reformation, the church was in a very poor condition, and a restoration took place during 1849 - 1851. However, because the restorers lacked the necessary knowledge and skills, yet another restoration was necessary in the 1950s. The interior is marked by the period after the Lutheran Reformation in 1536-1537 and is for a great part a result of the restoration that took place in the 1950s. What is known is that five peasants together with Sira Eilif built the church.
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.