The current building of Pöide Church is believed to be built on the remains of a chapel built in 13th century. After the conquest of Saaremaa in 1227, the eastern part of Saaremaa belonged to the Livonian Order, who built a fortress at Pöide as their headquarters during the second half of the 13th century. This fortress was destroyed by the Saaremaa natives during the wave of uprisings against the occupying forces that took place in Estonia and Saaremaa during St.George's Night Uprising of 1343. There was a chapel on the southern side of the fortress, and the walls of this chapel form the central part of Pöide church. For its massive form, it is called fortress-church.
The building was looted and burnt during World War II and also used as a storage building. The building suffered severe damages in fire in 1940, when lightning struck the tower. The large crack in the tower from the lightning can still be seen today.Pöide church has been renovated and reconstructed slowly since 1989. Choir-part, stone-altar and vestry room have been renovated. Several big tombstones inside the church are exposed behind glass, showing the importance of the church as a cultural center for nearby communities during previous centuries.
Reference: Wikipedia
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.