The Romanescue-style church of Ekerö date from the late 12th century. It was enlarged in the 1300s and the tower was erected in the 15th century. The overpainted mural paintings were found in the restoration made in 1933. the altarpiece date from the 17th century. The oldest artefact in the church is a font dating from the 12th century.
The interesting detail is a runic script in the tombstone under the pulpit. The script written in Latin says “Ingeborg Ermundsdotter rests here”.
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.