The Fortress of Charlemont (Fort de Charlemont) is a French stronghold located near the Belgian border on the Meuse. It is a citadel, surrounded by a network of outworks, including the connecting forts (Givet and the Mont d'Hours). It dominates the town of Givet and when in use as a working fortress controlled the valley of the Meuse.
In 1554, Henrik II of France sent in his troops against the Spanish Netherlands. Agimont castle was captured, and Givet and its region were devastated. As these conquests compromised the security of the Ardenne borders, Holy Roman Empire Charles V resolved to protect them by building new strongholds, that of Charlemont at Givet and that of Philippeville at Echerennes. From 1555, building of the fort began. 20000 infantrymen, 3000 cavaliers and numerous labourers were put to work. The fortress was established around an old, unfinished 15th-century castle, located on the heights of the Eastern point.
Later stronghold was then coveted and besieged by all the reigns of Europe until 1914. It never surrendered. Today, it is the tourist who climbs to attack the citadel, who is an essential witness to history.
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.