Scylletium was situated on the east coast of Calabria (ancient Bruttium), According to a tradition generally received in ancient times, Scylletium was founded by an Athenian colony, a part of the followers who had accompanied Menestheus to the Trojan War. But no historical value can be attached to such statements, and there is no trace in historical times of Scylletium having been a Greek colony, still less an Athenian one. It appears, indeed, during the historical period of the Greek colonies to have been a place of inferior consideration, and a mere dependency of Crotona, to which city it continued subject until it was wrested from its power by the elder Dionysius, who assigned it with its territory to the Loerians. It is evident that it was still a small and unimportant place at the time of the Second Punic War, as no mention is found of its name during the operations of Hannibal in Bruttium, though he appears to have for some time had his headquarters in its immediate neighborhood, and the place called Castra Hannibalis must have been very near to Scylletium.
In 124 BC the Romans, at the instigation of C. Gracchus, sent a colony to Scylletium, which appears to have assumed the name of Minervium or Colonia Minervia. The name is written by Velleius Scolatium; and the form Scolacium is found also in an inscription of the reign of Antoninus Pius, from which it appears that the place must have received a fresh colony under Nerva. Scylletium appears to have become a considerable town after it received the Roman colony, and continued such throughout the Roman Empire. Towards the close of this period it was distinguished as the birthplace of the Roman statesman Cassiodorus, founder of the Vivarium, a monastery dedicated to the coexistence of coenobitic monks and hermits, who has left us a detailed but rhetorical description of the beauty of its situation, and fertility of its territory. Cassiodorus' writings also make mention of production of highly priced terra cotta.
References:Celje Castle was once the largest fortification on Slovenian territory. The first fortified building on the site (a Romanesque palace) was built in the first half of the 13th century by the Counts of Heunburg from Carinthia on the stony outcrop on the western side of the ridge where the castle stands. It had five sides, or four plus the southern side, which was a natural defence. The first written records of the castle date back to between 1125 and 1137; it was probably built by Count Gunter. In the western section of the castle, there was a building with several floors. Remains of the walls of this palatium have survived. In the eastern section, there was an enclosed courtyard with large water reservoirs. The eastern wall, which protects the castle from its most exposed side, was around three metres thicker than the rest of the curtain wall. The wall was topped with a parapet and protected walkway.