The temple of Rome and Augustus was erected in the late first century BC. Several architectural elements of the building were found east of the Parthenon and many more were brought here after their discovery elsewhere. Nearby are the irregular tufa foundations (approximately 10.50x13 metres) of a building generally considered to be the Roman temple. Another theory, however, based on the construction technique of these foundations and on depictions of the Acropolis on Roman coins, places the temple east of the Erechtheion.
A small, round edifice, about 23 meters from the Parthenon, was to be the last significant ancient construction on the summit of the rock.
The inscription on the temple's epistyle mentions that the building was dedicated by the city of Athens to the goddess Rome and to Octavian Augustus. Pausanias does not mention the building during his visit to the Acropolis, possibly because it did not present any interest at his time. The small, circular temple had a single row of nine Ionic columns and no interior wall, the entablature and conical roof being entirely of white marble. The fact that the columns imitate those of the Erechtheion may indicate that the temple was built by the same architect who repaired the Erechtheion after it was damaged by fire.
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.