The Castello Maniace is a citadel and castle situated at the far point of the Ortygia island promontory, It bears the name of George Maniakes, the Byzantine general who besieged and took the city in 1038. Originally, one could only enter the castle over a bridge spanning a moat (now filled). A feature of the castle is the decorated portal. Today the castle is open to public and is a local tourist attraction in Syracuse.
The first fort was built here in 1038 by George Maniakes, a Greek general and later the Catepan of Italy, after he captured Syracuse from the Arabs on behalf of the Emperor Michael IV. Frederick II, as King of Sicily, had his architect Riccardo da Lentini rebuild it in 1232–1240. King Peter III of Aragon resided here with his family in 1288. From 1305 to 1536 the castle was used as residence by numerous queens of Sicily.
In the 15th century it was used as a prison. In the following century it was included in the fortification defending the harbour and the city. A huge explosion damaged it in 1704, after which it was renovated and adapted to the use of guns.
References:Rosenborg Palace was built in the period 1606-34 as Christian IV’s summerhouse just outside the ramparts of Copenhagen. Christian IV was very fond of the palace and often stayed at the castle when he resided in Copenhagen, and it was here that he died in 1648. After his death, the palace passed to his son King Frederik III, who together with his queen, Sophie Amalie, carried out several types of modernisation.
The last king who used the place as a residence was Frederik IV, and around 1720, Rosenborg was abandoned in favor of Frederiksborg Palace.Through the 1700s, considerable art treasures were collected at Rosenborg Castle, among other things items from the estates of deceased royalty and from Christiansborg after the fire there in 1794.
Soon the idea of a museum arose, and that was realised in 1833, which is The Royal Danish Collection’s official year of establishment.