The remains of the château de Bar-sur-Seine are the ruins of a medieval French fortified castle, destroyed in the 16th century. The first building was erected in the 13th century, adapted and altered into the 15th century.
The historic importance of the castle was due to its position on the frontier between Champagne (a vassal county of the King of France) and the Burgundy (a duchy allied with the English) during the Hundred Years War. At the time, the château de Bar-sur-Seine was considered the most important in Burgundy. Its architecture is close in style to that of the Château de Peyrepertuse in Aude.
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.