Arles (ancient Arelate) in the south of Roman Gaul (modern France) hosted several councils or synods referred to as Concilium Arelatense in the history of the early Christian church.
The first council of Arles in 314 formally condemned the heresy of Donatism. It began as an appeal by the Donatists to Constantine the Great against the decision of the Council of Rome in 313 at the Lateran under Pope Miltiades. The appeal turned out unfavorably to the Donatists who afterwards became enemies of the Roman authorities. The Council of Arles was the first called by Constantine and is the forerunner of the First Council of Nicaea. Augustine of Hippo called it an Ecumenical Council.
It excommunicated Donatus and passed twenty-two canons concerning Easter (which should be held on the same day throughout the world, rather than being set by each local church), against the non-residence of clergy, against participation in races and gladiatorial fights (to be punished by excommunication), against the rebaptism of heretics, and on other matters of discipline. Clergymen who could be proven to have delivered sacred books in persecution (the traditores) should be deposed, but their official acts were to be held valid. The assistance of at least three bishops was required at ordination.
Arles (French pronunciation: [aʁl]; Occitan: Arle [ˈaʀle] in both classical and Mistralian norms; Arelate in ancient Latin) is a city and commune in the south of France, in the Bouches-du-Rhône department, of which it is a subprefecture, in the former province of Provence.
A large part of the Camargue is located on the territory of the commune, making it the largest commune in Metropolitan France in terms of territory (though Maripasoula, French Guiana, is much larger). The city has a long history, and was of considerable importance in the Roman province of Gallia Narbonensis. The Roman and Romanesque Monuments of Arles were listed as UNESCO World Heritage Sites in 1981. The Dutch post-Impressionist painter Vincent van Gogh lived in Arles from 1888 to 1889 and produced over 300 paintings and drawings during his time there. An international photography festival has been held in the city since 1970.
The river Rhône forks into two branches just upstream of Arles, forming the Camargue delta. Because the Camargue is for a large part administratively part of Arles, the commune as a whole is the largest commune in Metropolitan France in terms of territory, although its population is only slightly more than 50,000. Its area is 758.93 km2 (293.02 sq mi), which is more than seven times the area of Paris.