Originally Loosdorf Castle was built as a fortress in medieval times. It was first officially mentioned in 1320, however, based on certain archived documents it was most likely built already in the 10th century. In the course of the Thirty Years' War and due to a massive fire in 1645 parts of the castle were destroyed. Afterwards the castle changed its owners frequently. In 1740 the Liechtenstein Family became the owner of the castle. Between 1760 and 1810 Emmanuel Duke of Liechtenstein executed a lot of construction and decoration works in and around the castle. Based on its long-standing history the castle shows medieval, classicistic and renaissance elements.
1834 Count Friedrich Piatti acquired Loosdorf castle and moved the family residence and their porcelain collection from Dresden to Loosdorf. They were the first Piatti's who partly lived there. Since then the castle is in the possession of the Piatti Family.
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.