Museum of Slavonia is the largest general-type museum in Croatia. It was established in 1877 in Osijek. Since 1946, it is located in the City Magistracy building, constructed in 1702 for the purposes of the Vienna Chamber, town government and police. Today, among the museums numerous collections, the most prized are the Roman Mursa and numismatic collections. The Museum's library contains more than 70,000 books.
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.