Hohennagold Castle is a ruined castle overlooking the Black Forest town of Nagold. The ruins represent a relatively well-preserved 12th-century castle. The keep behind the curtain walls, a tower in the north-western corner of the complex as well as the outer ward with half-round and angular towers, are still visible. Around the castle there appears to have been a moat.
An early medieval fortification was possibly erected at the location of the future castle around 750 by Count Ruodbrecht, one of Charlemagne"s uncles. The original castle was built around 1100 by the Counts of Nagold, who became the Counts palatine of Tübingen in 1145. The castle complex was extensively expanded between 1153 and 1162.
In the middle of the 13th century the castle passed into the possession of the Counts of Hohenberg. Thereafter, one branch of this family called itself Counts of Nagold and had the castle transformed into their residence in the 13th and 14th century. In 1364 the sold the castle to the Counts of Württemberg. The new owners added bastions and towers to the outer ward and had the castle occupied by their ministeriales. Towards the end of the Thirty Years" War, the castle was conquered by Bavarian troops in 1645 and severely damaged. In 1646 the remnants of the castle were pulled down.
In 1945 the northwest tower was destroyed by a low-level attack carried out by Allied planes. The castle remains were tentatively restored after World War II, trying to preserve the castle as a ruin.
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.