The medieval stone church of Ås date back to the 12th century. It is the only church in Öland where the tower is located in the east side. The church was enlarged in 1770 and the interior is mainly from the 18th-19th centuries. The pulpit is very unusual; this nineteenth century work is directly above the altar, an arrangement rarely seen in Swedish churches. The church is long established as a landmark for seafarers. During the nineteenth century the tower was rebuilt to incorporate a lantern, so that it doubled as an early lighthouse.
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.