The Musée historique de Mulhouse is a municipal history museum and archaeology museum in Mulhouse. It is housed since 1969 in Mulhouse's Old Town Hall, a Northern Renaissance building dating mainly from 1552.
The interiors of the Old Town Hall with their intact original decoration are an integral part of the museum. The museum's medieval sculptures are on display in the neighbouring Museum of Fine Arts, such as a Saint George Slaying the Dragon from 1490, originally from Tyrol. That work, as well as many others, is on permanent loan to the municipal collections of Mulhouse by the Société industrielle de Mulhouse (SIM), a learned society established in 1826 by local industrialists such as Dollfus, Koechlin, and Schlumberger which had begun collecting artworks in 1831.
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.