The small church of Oratorio di Santa Maria in Valle (also known as Lombard Temple), next to the Natisone river, is a notable example of High Middle Ages art sometimes attributed to the 8th century, but probably later. Included in the old Lombard quarter, it was probably used as Palatine Chapel by the Lombard dukes and king's functionaries. The fine decorations, statues and stuccoes (11th or 12th century) housed in the interior, show a strong Byzantine influence.
Cividale del Friuli, the capital of the first Lombard duchy in Italy has been present in the UNESCO World Heritage Site list since 2011.Cividale del Friuli, thanks to the Lombard Temple, one of the most representative symbols of the Lombard power in Italy, has received this important award being included, together with other Italian cities that preserve prestigious Lombard evidence.
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.