The lords of Beaugency attained considerable importance in the 11th, 12th and 13th centuries; at the end of the 13th century they sold the fiefdom to the Crown. Afterward it passed to the house of Orléans, then to those of Dunois and Longueville, and ultimately again to that of Orléans. The city of Beaugency has been the site of numerous military conflicts. It was occupied on four separate occasions by the English. On June 16–17, 1429, it was the site of the famous Battle of Beaugency, when it was freed by Joan of Arc. Beaugency also played an important strategic role in the Hundred Years´ War.
The 36m high square tower of Château of Beaugency was built in the 12th century. In the 1530 cardinal Le Longueville ordered bo enlarge the keep as a larger castle. It was burned by the Protestants in 1567 and suffered extensive damage to the walls, the castle, and the church.
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.