Giovanni II Paleologo, Marquis of Monferrato, ordered to build the current castle in Casale Monferrato and the work continued until 1357. When Casale assumed the role of capital of Monferrato's marquisate and obtained in 1474 the title of city, also the castle, seat of the court, changed its aspect following the restoration with the Marquises Guglielmo VIII (1464-1483) and Bonifacio V (1483-1494).
When Giovanni II Paleologo died, the Gonzaga of Mantova took charge of Casale. Because of the new military techniques the castle was reinforced. They strengthened the walls and the plan form was modified, becoming hexagonal (we can still see it). The towers were reinforced too and four new ravelins were added. At the beginning of the 17th century the castle returned to assume the role of seat of the court: indeed, the Dukes of Mantova, busy in frequent negotiations with Savoy, sojourned there. Later it became the principality of the Duke Carlo II Gonzaga-Nevers (1637-1665), who many times was there in vacation with all his court, giving a considerable impulse to the elite and cultural life of Casale.
With the crisis of the Gonzala's dynasty, the castle was about to face an unstoppable decline. The city fell into Savoy's hands in 1708 and the castle became a barracks.
In the middle of the 19th century Casale was fortified in preparation for a war against Austria and the castle became a defensive structure. The state of Savoy decided to demolish the eastern ravelin, which pointed towards the city allowing the creation of an extended public area (today's piazza Castello). The municipality designated this area as an open-air market zone. With the advent of the Unity of Italy the other three ravelins were demolished too, because they were unnecessary.
References:Stobi was an ancient town of Paeonia located near Gradsko. It is considered by many to be the most famous archaeological site in North Macedonia. Stobi was built where the Erigon (Crna River) joins the Axios (Vardar), making it strategically important as a center for both trade and warfare.
Stobi developed from a Paeonian settlement established in the Archaic period. It is believed that in 217 BCE, Philip V annexed Paionia during his campaign against the Dardani who had entered Bylazora, the largest Paeonian town.
The city was first mentioned in writing by the historian Livy, in connection with a victory of Philip V of Macedon over the Dardani in 197 BC. In 168 BC, the Romans defeated Perseus and Macedonia was divided into four nominally independent republics. In 148 BC, the four areas of Macedonia were brought together in a unified Roman province. In the reign of Augustus the city grew in size and population.