The Château de Sully-sur-Loire is a castle converted to a palatial seigneurial residence. The château is the seat of the duc de Sully, Henri IV's minister Maximilien de Béthune (1560–1641), and the ducs de Sully. It is a château-fort, a true castle, built to control one of the few sites where the Loire can be forded; the site has perhaps been fortified since Gallo-Roman times, certainly since the beginning of the eleventh century. In 1218, Philip Augustus constructed a cylindrical keep to the south of the present enclosure, of which buried foundations remain. Guy de la Trémoille, inheriting the fortress, undertook the construction of the Donjon, flanked by four towers, beginning in 1395. The smaller side was added in the 16th century to provide more agreeable accommodation. Sully bought the domaine in 1602, enlarged the park and the fortress; he strengthened the embankments of the Loire to protect the town from occasional flooding.
The Château de Sully-sur-Loire remained in the possession of the family until 1962 when it became a property of the Département du Loiret, and has since benefited from numerous restorations. It hosts a classical music festival each June. The château contains numerous tapestries, including a set of six 17th century hangings, paintings of Sully's ancestors and heirs, and 17th century furnishings. Here is also the tomb of Sully and that of his second wife.
Henri IV never visited, but Mazarin and Anne of Austria took refuge here in March 1652 during the rigors of the Fronde, France's civil war. Turenne stayed here the same year, before his defeat of the Grand Condé at the battle of Bléneau. Later, in 1716 and again in 1719 the château sheltered Voltaire, when he had been exiled from Paris for affronting the Régent, Philippe, duc d'Orléans.
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.