Wittigkofen Castle was originally built as a residence for a farm and was awarded to the followers of the Zähringians. In the mid-13th century Heinricus Wittenchoven managed the farm. He was a member of the council and the first documented feudal superior. The property was also home to the monastery of Interlaken. The castle had several owners and belonged to different families. Beat Ludwig von Mülinen (1521-1597) purchased the castle in 1570 and gave half to Hans Rudolf Steiger (1549-1577) six years later.
In June 2011 a decision was made by the director Jürg StüssiLauterburg of the Library am Guisanplatz (BiG), a federal military library in Bern, to purchase a historical collection of items from the Von Wurstemberger family. The collection of items had been collected and exhibited in the Wittigkofen Castle. The collection included a large library, maps, and a portrait of Johann Ludwig Von Wurstemberger, a cabinet, and drawings. The Von Wurstemberger library was located in the French room of the castle and contained many books that reflected the impact that this family had on the Confederation's military history. Before being packed for transfer, every book was thoroughly cleaned with a special vacuum to avoid bringing insects to their new location. The books were packed into 50 removal boxes for transfer to the Library am Guisanplatz, with the help of active military personnel, and moved to their new location in September 2011.
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.