San Giovanni, also called St. John’s Castle, is perched 1200m high on the hill of St. John. The fortifications date back as far as 532 when Byzantine Emperor Justinian I had the fort built. Since it’s creation, the fort has under seen plenty of changes and battles under Venetian, Russian, and French rule. It’s been bombed by British Naval armies, occupied during World War II, and even survived three separate earthquakes.
The walking path to San Giovanni castle has 1,350 steps and needs good shoes. The view over the Kotor bay is breathtaking from the top.
San Giovanni is part of the fortifications of Kotor which are an integrated historical fortification system that protected the medieval town of Kotor containing ramparts, towers, citadels, gates, bastions, forts, cisterns, a castle, and ancillary buildings and structures. They incorporate military architecture of Illyria, Byzantium, Venice, and Austria. Together with the old town and its natural surroundings the fortifications were inscribed in the list of UNESCO World Heritage Sites in 1979 labelled Natural and Culturo-Historical Region of Kotor.
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.