Ad Quintum was an ancient Roman city in Illyricum, on the Via Egnatia connecting Dyrrhachium with Byzantium. The settlement was probably founded in the late 2nd or in the early 3rd century AD, and continued to be populated until the 4th century AD. Its well preserved ruins can be seen near the present-day village Bradashesh, right next to the SH7 road. The site was extensively excavated around 1968 which uncovered a fine Roman villa and a remarkably well-preserved thermae (bathhouse) taking advantage of the abundant springs nearby.
The bathhouse consists of five main rooms. At the eastern end there is an apsed exedra that was used as a dining room. This connects to the small rectangular cold plunge-bath.
The apodyterium (undressing room) also survived with fine paintings and frescoes on its walls. Further to the western end of the building the ruins of the laconicum (heated sweating room) can be seen with the traces of the hypocaust (underfloor heating), along with the adjacent praefernium (furnace).
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.