Inzlingen Castle is surrounded by a moat situated in the village of Inzlingen. The origins of the castle cannot be clearly dated. The first written evidence dated 1511 – at this time already a possession of a relative of the barons Reich von Reichenstein. This noble family hold fiefdoms from the Prince-Bishopric of Basel, the Margraviate of Baden and the House of Habsburg. A Prince-bishop of Basel, six mayors of Basel and a principal of Basel University came from this noble family. In 1394 Margrave Rudolf III. enfeoffed Heinrich Reich von Reichenstein with the right for high justice regarding the village of Inzlingen and afterwards the family was in a position to acquire also a substantial landholding within this village and named themselves Lords of Inzlingen. A first major conversion of the castle dated 1563 to 1566. A copper engraving published 1625 shows the buildings at this time. Later (1674 to 1745) the buildings were converted to a Baroque style and at about 1750 a Baroque interior followed.
Since 1820 the castle was a domicile for a weaving mill producing silk ribbons and afterwards it was used for a century as a farm house. In 1969 Inzlingen Castle was purchased by the municipality of Inzlingen and renovated thereafter. Since 1978 it functions as city hall of the municipality of Inzlingen. Furthermore there is a luxury restaurant within the castle.
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.