Roly Castle is a château-ferme, or fortified farmhouse, in Roly in the municipality of Philippeville. The existence of a fortification, in the form of a tower, is recorded here as early as 1069, but the present donjon dates from the 13th century, and this is the oldest extant part of the buildings. Major restorations and reconstructions took place in 1616 and between 1746 and 1749, and as of 2010 the buildings are again undergoing restoration.
Besides the donjon, the castle contains extensive domestic ranges and numerous service and outbuildings. The whole complex is surrounded on two sides by moats.
The castle also contains a private chapel, dedicated to Saint Anthony.
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.