Petäjävesi old church was inscribed on the UNESCO World Heritage List in 1994. It was designed and built in 1763-64 by a local peasant master-builder, and in 1821 his grandson added the bell tower at the west end. Petäjävesi was then part of the Jämsä congregation, but the trip to Jämsä church was too long for local people. The Crown of Sweden had accepted the request to build a graveyard and a small village church at their own expense as early as in 1728, but building was delayed nearly forty years. The church was located to a typical old countryside site. It was chosen so that the parishioners got easily there by boat or in the winter stay over.
When the newer church was completed in 1879, old church was abandoded for nearly for decades. The period of neglect between 1879 and the 1920s was a blessing in disguise. The historical importance of the church was noticed first by the Austrian art historian Josef Strzygowski in the 1920s. After 1929 church is renovated several times.
Petäjävesi olf church is a very unique and well-preserved wooden church representing the wooden architecture tradition of eastern Scandinavia. Nowadays it’s a popular tourist attraction and open every day in summer time (in winter season by appointment).
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.