The defences of Kraków date back to the 13th century and consisted of a wall with 39 towers and 8 gates, surrounded by a moat. The Wawel Castle defended one end of the town, and the Barbican the other. Today you can still see the Castle and the Barbican, and a small section of the wall by St Florian's Gate.
But the site of the old wall has been replaced by a garden, The Planty, that encircles the city. As you walk around the garden you can still see fragments of the walls and the gates.
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.