The Aragonese Castello di Brucoli was built in the 15th century as a watch tower to guard the coast and monitor and protect against Turkish-Barbarian raids. It underwent several additions and alterations in the following centuries, e.g walls with circular towers at the corners were added in the 16th century.
The Castle of Brucoli dominates much of the Gulf of Catania and was therefore used as a watch and guard post in the 18th century, hosting a military garrison in the employ of the nearby fortress of Augusta. It guarded also the port of Brucoli.
Despite the effects of time, the castle is in good condition.
References: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.