In 44 BC, Rome colonized Butrint. One of the city's greatest periods of prosperity occurred under the Roman Empire. The Roman Forum was constructed in the Augustan period (27 BC-AD 14) and later aggrandized in the 2nd century AD. Numerous baths, fountains, and public buildings were constructed during this period. A prominent and wealthy woman, named Junia Rufina, adorned in marble a spring dedicated to nymphs bearing her name. The Forum came to an end in the late 4th century AD, as a result of a devastating earthquake.
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.