The Château d'Esparron-de-Verdon is located in the commune of Esparron-de-Verdon in the Alpes-de-Haute-Provence department.
The first mention of a castle in Esparron dates back to 990. A charter from the abbey of Lérins, dated that year, refers to a church dedication near 'castrum Sparronis, in Bulzolschi valle.' Historian Mathieu Vivas suggests this text dates more likely to the 1020s, tied to the incastellamento phenomenon in Provence, during which fortified settlements emerged. In 1182, a man named Bertrand d'Esparron is cited in the cartulary of the Saint-Victor Abbey in Marseille.
Agnès Spata, daughter of Augier Spata, married Boniface IV de Castellane in the early 13th century. The Castellane family, one of the oldest Provençal families, shared lordship of Esparron with the d'Esparron family during the 13th and 14th centuries. By the 15th century, the Castellane family became sole lords of Esparron through marriage and purchase.
A square tower, 9 meters wide with walls 1.5 meters thick, was constructed in the early 13th century. Modifications occurred between 1520 and 1540, with additions like a latrine tower and a spiral staircase.
In the late 18th century, the east wing was restored with modern touches like adjoining rooms, salons, and ceremonial chambers. The current owner, Count Bernard de Castellane-Esparron, inherited the estate in 1989 and, along with his wife Charlotte-Anne, has since converted the castle into a guesthouse.
The castle features a 13th-century square keep, modified in the 15th century, as well as remnants of curtain walls and living quarters from the 15th and 17th centuries. In the latter half of the 18th century, the seigneurial castle was transformed into a pleasure residence by reconstructing the south wing.
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.