In the prehistoric age on the hill of San Giusto there was a castelliere (fortified borough), which in the Roman age became an important urban centre. The fortress, built by the Venetians in the Middle Ages, was pulled down in the 14th century by will of the Patriarch of Aquileia and, in 1470 only, it was rebuilt by Friedrich II of Habsburg; the square tower and the two-storey building, which today houses the Castle Museum, date back to this period.
Under the rule of the Republic of Venice, which at the beginning of the 16th century had re-established its rule over Trieste, the castle's defences were strengthened and, under the Austrian rule again, the works continued until the building, in 1630, of the large ramparts and of the linking walls.
The fortified complex can be accessed from a ramp ending in a wooden drawbridge, over a not very wide moat; after crossing the cross-vaulted hall, you will reach the Piazzale delle Milizie (Square of the Troops), where stairs and allures lead to the ramparts.Since 1930 the castle has been a property of the Municipality, which has equipped it for tourist purposes and uses it for cultural events, shows and temporary exhibitions.
Since 2001 the Lalio rampart of the Castle of San Giusto has been housing the new Lapidario Tergestino, which preserves all the Roman stone finds that were previously displayed in the Orto Lapidario garden.
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.