Kommende Ramersdorf was established in 1230 as one of the over 300 commanderies of the Teutonic Knights following the crusades. The Georgian chapel , which had been preserved, was built between 1220 and 1230. In the 13th and 14th centuries the commanders of the Ramersdorf were mostly Rhenish nobles, ministerial and urban patricians. After a fire in 1842, the entire complex was rebuilt in Neo-Gothic style. Today Ramensdorf is a hotel.
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.