During the Second Margrave War in 1552, Forchheim was occupied by troops of Margrave of Culmbach and later expanded with new fortifications. The town's defenses were improved with bastions, towers, and gates. During the Thirty Years' War, Forchheim served as a strategic location and a refuge, and its fortifications were further developed. Various outworks and defensive structures were added, designed by prominent architects. In the 18th century, additional buildings were constructed in the town center. After changes in ownership, the fortress lost its military importance and was gradually demolished starting in 1875. However, the moats were transformed into a park for public enjoyment.
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.