The Castello Svevo or Swabian Castle (Castello normanno-svevo), also known as the Houhenstaufen Castle, is a castle in the Apulian city of Bari.
Probably built in 1132 by Norman King Roger II, it was destroyed in 1156 by king William I of Sicily and rebuilt and reinforced in 1233 by the Holy Roman emperor Fredrick II. During the Angevin domination, it went through several transformation, and after being acquired by Duke Ferdinand of Aragon, was donated to the Sforza family and passed to Bona Sforza, Queen of Poland. After Bona's death, it was returned under the King of Naples and transformed into a prison and barracks.
The castle is surrounded by a moat on all sides, except the northern section, which was bordering the sea and can be accessed from the bridge and the gate on the southern side. It is mainly composed of the Aragon walls and the main Hohenstaufen tower, and is currently used for exhibitions.
According to the tradition, in 1221 Emperor Frederick II met St. Francis of Assisi in this castle. According to tradition, the emperor had a courtesan sent to Francis's room and watched through a peephole to see what would happen. When Francis sent the woman away, Frederick was impressed with his principles; the two spent the rest of the night in conversation. This story is not confirmed beyond doubt, but it is considered believable.
The castle it is currently used for exhibitions.
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.