The imposing Castle of Kalamata stands on a hill above the historic centre of the city. In the 6th century AD, a church was built in the original castle devoted to Virgin Mary. An icon of Virgin Mary in the church became famous as Kalomata (meaning 'beautiful eyes'). This later evolved to Kalamata which became the name of the church, the castle and the city.
The current castle was built in the 13th century and is one of the numerous castles constructed in the Peloponnese by the Franks, who were seeking to establish their dominance over the widest possible range.
The castle was granted by William Champlitte to Geoffrey I Villehardouin, from the prominent Villehardouin family, who founded the principality of Achaia. Geoffrey expanded and fortified the castle, something that was deemed necessary, since over the centuries it was brutally attacked many times; by the Slavs in 1293, the Venetians in 1685 and the Turks in 1825.
Between 1685 and 1715 the castle was in Venetian hands. In the 18th century it lost its strategic importance and by the beginning of the 19th century the castle was abandoned. In 1825 the castle and the whole town was heavily destructed by the army of Ibrahim Pasha.
Today, there are still remnants of the fortification in various sites, a section of the defensive tower and an area covered by a small dome, which has been identified as the ruins of a church.
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.