Falkenberg Castle was founded probably between 895-898 AD, but not mentioned before 1154. In 1294 Aldsassen monastery bought it. In 1428 the monks successfully defend the castle against the Hussite invasion. During the Thirty Years' War in 1648 Hans Christoff von Königsmarck (Swedish-German soldier) conquered the castle and left it in ruins.
After been decayed for centuries, Friedrich-Werner Graf von der Schulenburg, a German diplomat and ambassador in Moscow, bought the castle as his retirement real estate. Following images from old paintings, he rebuilt the castle from 1936 – 1939. Schulenburg was part of the Operation Valkyrie, the failed assassination of Adolf Hitler. He was executed shortly after in 1944. The Gestapo confiscated the castle in World War II and arrested prisoners from the Flossenbuerg concentration camp. After the war, the Schulenburg family assumed ownership of the property.
Since its grand opening in 2015, visitors are invited to explore the castle’s museum and spend a night in the castle hotel. The castle also features a unique restaurant and a large knight’s hall for events.
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.