The first written document of castle in Linz dates from 799 AD, during the reign of Charlemagne. Today there are still some walls of this castle, together with bastions and the Friedrich Gate, named after Emperor Friedrich III, who resided here until his death in 1493. As the temporary heart of the Habsburg Empire, Linz was raised by the Emperor to the status of provincial capital. In the 17th century, Rudolf II rebuilt the castle, which today is home to the Upper Austrian provincial Museum.
The south wing was destroyed in the City Fire of 1800, and was rebuilt in modern glass-and-steel architecture for the Capital of Culture year 2009. It now constitute the largest universal museum in Austria. The wings of Linz Castle contain the history of culture collections of the Upper Austrian Provincial Museum. The permanent exhibitions present a walk through the artistic and cultural history of Upper Austria from the Neolithic Age up to the 20th century. The new South Wing contains the permanent exhibitions on nature and technology in Upper Austria. There is a continuous programme of special exhibitions.
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.