The University of Catania is the oldest university in Sicily and the 13th oldest in Italy.
The university was founded by King Alfonso V of Aragon (who was also King Alfonso I of Sicily) on 19 October 1434. Alfonso V with this gesture wanted to compensate the city (in which there had been recently established the Royal Court) for moving the Sicilian capital from Catania to Palermo. The activity of the Atheneum actually started a year later, in 1445, with 6 professors and 10 students. The first four faculties were Medicine, Philosophy, Canon and Civil Law and Theology. Lessons were initially held in a building in Piazza del Duomo, next to the Cathedral of St. Agatha, and eventually moved to the Palazzo dell'Università in the late 1690s. This building remains the seat of the university to this day.
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Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.