Château de L'Échelle origins are unknown. A first castle at this site was probably founded in the 13th century. In the 15th century a band of Armagnacs, outlawed supporters of Charles, Duke of Orléans, during the Hundred Years' War, settled in L'Echelle Castle and ravaged the area.
In 1594, Antoine de La Marche des Contes became Lord of L'Echelle by his marriage to Anne de Maucourt. Antoine, Governor of Sedan between 1599 and 1640, rebuilt L'Echelle Castle and gave it its present appearance. In 1642 Spanish troops plundered the village and attacked the castle. The castle walls still bear traces of this attack.
In 1730 the castle was acquired by the Chapter of Reims and transformed into a farm. During the French Revolution it was confiscated and sold as Bien Nationaux to a local hatter, Simon Pottier. He ceded the castle to the local community. The castle then became the town hall, a school and lodging for the head teacher.
At present L'Echelle Castle is still property of the village and houses a small local history museum.
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.