The Château de Mirabeau is a medieval castle overlooking the village of Mirabeau. Its origins date back to the 12th century, when it was first mentioned as a fortified structure. Initially owned by the Abbey of Saint-André, the castle underwent various changes over the centuries. The castle played a crucial role in the local economy, especially during the late Middle Ages, by controlling a key river crossing.
The current structure, likely built in the late 16th to early 17th century, features a quadrilateral layout with four circular towers. It has been remodeled and expanded, particularly in the 18th century, and includes a chapel and various living quarters.
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.