Acinipo was a city about 20 kilometers from Ronda, believed to have been founded by retired soldiers from the Roman legions more than 2,000 years ago. The remaining ruins include a Roman theater still in use today.
Some historians assert that Acinipo was created after the battle of Munda (45 BC), fought between the armies of Julius Caesar and the army of Pompey's two sons, Gnaeus and Sextus. To Caesar, Munda was supposed to be a mop-up action after Pompey's main forces were defeated in Greece. But Munda was no mop-up exercise. Tens of thousands of Romans were killed on both sides; there was no decisive victory for Caesar's armies; and one of Pompey's sons, Sextus, fled to fight another day as a famous rebel pirate against Caesar's successor, Augustus.
Some Spanish historians state that Munda is the Roman name for Ronda, where the battle of Munda may have been fought. According to Pliny, the battle of Munda was fought in Osuna, about 50 km north of Ronda in the province of Seville. But there is general agreement that Acinipo was created for retired veterans of Caesar's legions, while Arunda (Ronda) would be a separate Roman outpost, perhaps created before the Munda conflict for the veterans of Pompey's legions.
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.