Built from 1306 during the village fortification by the Comte de Savoie Amédée V, Yvoire castle had a military goal to watch the navigation and control the road which linked Geneva to the high valley of the Rhône and to Italy.
For several centuries, the village of Yvoire was in the center of several strategic or religious wars between France, Bern, Geneva as well as the houses of Faucigny, Dauphiné and Savoie.
In 1591, a fire devastated the building which only found its shape back in the 20th century, when Félix Bouvier of Yvoire undertook several internal and external renovation works, like the roof and the watch towers setting in 1939.
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.