Hohenburg castle is assumed to be constructed in the second half of the 13th century. The influence of the Hohenburg family was extensive in the area between Bitche, Saargmünd and Pirmasens. There were feudal relations with the King but also to the Count of Zweibrücken and to the Counts Palatine. The castle is situated close to the German-French border on the Alsace side.
The first known representative of a Hohenburg family was Gottfried Puller who served in the military under the Emperor Friedrich II in 1236. In 1262 the name Hohenburg is documented for the first time, when Konrad and Heinrich of Hohenburg transferred their property to the bishop Heinrich II of Speyer.
The castle was seriously damaged in 1386 by the troops of Strasbourg during the siege and conquest of the neighbouring Löwenstein Castle. During the 30 Year War the castle was seriously damaged and in the 1780’s it was completely destroyed by French troops.
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.