After Hochosterwitz and Fortress Landskron, Glanegg is the third largest military complex in Carinthia. The history of the castle is first documented in 1121. The first owner was the Duke Henry III of Carinthia. After his death in 1122 it was inherited by his nephew, Count Bernhard von Marburg and later Otakar III. His son, Duke Ottokar IV left the castle after his death in 1192 to Leopold V. From 1473-1478 the castle was threatened by the Turks, but they failed to capture the castle. After three more owners, in 1534, King Ferdinand I owned the castle, but he had to sell it to Ulrich von Ernau because of his debts.
In 1818 by the castle was purchased by Hofrichter Hirzegger Ossiach, whose daughter, Josephine, married Klinze Glanegg, who was given the castle as a wedding present. In 1860 the castle was sold to Bregenz Mayor Ferdinand Kinz. After three more owners, the castle Glanegg finally came to a family of twins, which now own the castle.
The building is composed of various architectural elements, ranging from Romanticism to Renaissance. What is striking is the entrance to the round tower. The decay of the castle began in the mid-19th century.
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.