The castle is placed on a mountain (354 mt),  6 Km  Eastern far from Mazzarino (Caltanissetta). With its great lancet arch entrance, wide cisterns and basement, the building is surrounded by firm embattled wall. Its denomination originates from the expression "Arx Saliatum" which means "castle of the Saliati", Mars's ministers instituted by Numa Pompilio. A Mars temple, which was saved by the arab invaders while turned into church by Normans, is next to the castle. There are many details in the wide original territory,  that show the roman-byzantine origins of the citadel, still present, while, next to the destroyed built-up area and the fortress,  most ancient signs of a preceding civilization are present; the site is much more ancient, dating back to the greek-sicilian age, then abandoned in the following period of peace choosing the flat land and the lower valley. The Grassuliato built up area, nearby the castle, was not so broad, as you can see by the finds and a summary searching. Grassuliato had a remarkable military importance and for long time remained as important as its fortified fortress.  It was an important religious center too,  not only christian but also muslim.  In this way Grassuliato assumes a particular prestige as strengthened lived earth and so it  becomes seat of a wide district, while at the same time he represents an important base in the defensive system created by the Muslims, where men of different race and religion exercise a single and collective will, cheap exchanges of handmade articles and products of the soil with the population of the countrysides, of the earths and the farmhouses, with that of the same towns, that wider exchanges have in their turn with the other christian countries and muslim , reciprocal tolerance maxim. But the importance of our center in the triple military-political, administrative and religious appearence, also supposes a collectivity of notable, the government of his "caid" puts ( also Butera has his which exercises his influence on a wide area, administrative besides judicial ), and he supports him, when also later these heads will set up a personal government in their isolated fortresses, thing that announces and speed-up the norman conquest of Sicily, now definitively divided without a central strong government. With this occupation, Grassuliato, in the new military norman government, which unlike the precedent is tight unitary, is levelled to the other lived centers, but his strong fortress, with the institution of the Aleramica County inside, from Falconara on the sea, Butera, Mazzarino, Barrafranca, Piazza Armerina, Aidone, up to Paternò and further on, because with this long and wide bind lived from Latins, the eastern greek element was divided from the western muslim one, becomes well soon an important base in the articulate system of the wide county, taking his importance seen in his triple appearance again, so that we see it in the documents of the time and the next ones, still keeping  for very much time his pre-eminence and importance up to the beginning of a new era, when the fortress will lose his function by now useless and by his overlord the near Mazzarino earth will be increased. Of the castle by now only remain few ruins. Visit is however heartily advisable for the glamour that still these places arouse.