Palais Augarten was constructed in the late 17th century by Johann Bernhard Fischer von Erlach on the site of a hunting château and gardens. In 1780 this palace came into the possession of Joseph II, Holy Roman Emperor. Until the beginning of the twentieth century it remained in the possession of the Habsburg family. During this period, and especially in the nineteenth century, many balls were held in the palace, and a salon was opened. Among the guests at that time were Richard Wagner, Franz Liszt, and Hans Makart.
The greatest ball in the Palais Augarten took place on the occasion of the Viennese World's Fair of 1873; among the guests were Emperor Francis Joseph I and Czar Alexander II of Russia. In 1897 the palace was significantly remodelled for the family of Archduke Otto, the nephew of Emperor Francis Joseph.
Despite extensive damage suffered during World War II, the palace has been maintained almost in its original appearance, and many of the original furnishings can still be found there. Today, Palais Augarten is the home and rehearsal space of the Vienna Boys' Choir, who also have their own school there. The palace is located on 130-acre Augarten park, which is the oldest Baroque garden in Vienna.
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.