The Gialia Monastery is a ruined medieval Georgian Orthodox monastery dedicated to the Virgin Mary. Located in a forest some five kilometers from the coast near the small town of Polis Chrysochous, the ruins were identified, in 1981, by the Georgian scholar Wachtang Djobadze of California State University on the basis of the medieval Georgian accounts. It was not, however, until 2006 that a systematic archaeological research followed after the Georgian and Cypriot governments agreed to jointly investigate the ruins.
It was reported in 2008 that excavation evidence indicated the monastery was commissioned in the late 10th century by Georgian King David III Kuropalates and that renovations were made during the reign of David IV Aghmashenebeli (1089-1125). The monastery is certainly attested in the 12th century, when it was renovated at the behest of Queen Tamar of Georgia (1184-1213). Ancient Georgian sources report that it was in Georgian ownership until the 14th century, and graves and other items uncovered indicate that it was in use between the 14th and 16th centuries. It was reportedly plundered and destroyed in the 16th century, but appears to have been in use as recently as 1935, until final destruction by an earthquake in 1953.
Two main structures have been identified: the earlier Virgin church, and the later St. George's church dated probably to the 11th and 12th centuries respectively. Remains of Georgian paintings and inscriptions from the 13th and 14th century have also survived.
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.