The existence of Saarbrücken was first documented in 999 under the name 'Castellum Sarabrucca'. In the 17th century the castle was rebuilt in the style of the Renaissance, but later destroyed and now only the cellars of this construction remain. In the 18th century Prince Wilhelm Heinrich had his architect Stengel build a new Baroque residence on the same site. Since then the castle has suffered various bouts of destruction and was partially burnt down and reconstructed before being thoroughly and magnificently renovated in 1989. The architect Gottfried Böhm designed a state-of-the-art central block of steel and glass. The castle is now both an administrative centre and a venue for cultural events, conferences and festivities.
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.