Santi Pietro e Paolo d’Agrò church one of the foremost examples on Sicily of Norman architecture. The church was constructed during the 12th century as part of a Basilian monastery. Its exterior is characterised by its block-like form, but the facade is richly decorated. Inside, the church has the plan of a basilica with three aisles. Two domes rise from the central nave, one above its centre and one above the choir.
The architecture of the church displays influences from a vast variety of sources, and constitutes heritage of Muslims, Byzantines, and Normans. The block-like form of the exterior is reminiscent of North African contemporary architecture while the floor plan of the church is similar to the way churches were built in the Byzantine architectural tradition. Its principle of construction at the same time is essentially that of Western European Gothic architecture. In its details and decorations, too, the church exhibits a wealth of influences (e.g. in the use of muqarnas vaulting).
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.