The origins of Hernen lie to the west of the present castle, next to the river Elst. That is where the first motte castle of Hernen was sited, and remained in use until the 12th/13th century. This was possibly also the fortress of the Lords of Hernen, who first appear in the records in 1247. The lord received income through taxes and special privileges, such as the milling rights. This income enabled him to extend his castle, which in turn increased his status.
Around that time, Hernen was partly in Cleves and partly in Gelderland. In the 14th century, work started on the construction of the present castle, which was sited on the Gelderland part. Later, everything came again under one estate. The east wing and the monumental entry gate date from 1555. A special feature is the covered patrol path - quite rare in the Netherlands.
The castle never suffered war damage or natural disasters. In the last century, the lord of the castle hardly ever lived there, leaving the administration to a steward. There was no urge to embellish the castle according to the latest fashion in architecture, and consequently the castle was able to keep its austere, medieval character.
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.