The first castle built on the rock spur above Bolzano by the Lords of Haselberg dates back to the 12th century. This Haselberg castle is today known as Castle Flavon. Already in those days the fortress boasted a circular wall at its east and south flank, which could easily be assaulted. The great hall was located just above the porphry rocks. It is presumed that also a donjon already existed in these days. Only few documents testify the renovations in the 13th and 15th century. Between 1474 and 1541 the castle was repeatedly changend and enlarged. Still today the renovations that were carried out under this rule is in great parts preserved.
A double arcade hall, a further great hall in the north of the castle as well as a new defence wall were added. Moreover the rooms of the three-winged castle were lushly decorated with frescoes. From 2001 to 2002 Castel Flavon was refurbished under the direction of the architect Dietmar Dejori. Overbuildings from the 18th century were eliminated from the ancient double arcades, cellars were laid open and the collapsed great hall in the north was rebuilt in order to restore the original three-winged form of the building.
Today Castel Flavon hosts a restaurant as well as various rooms that are used for seminars, congresses and celebrations. Worth noticing are also the frescoes in the interior, illustrating emperors and generals as well as scenes of the antique myth of Apollo.
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.