The erection of the imposing manor dates back to the first half of the thirteenth century and is commonly attributed to the initiative of the Marquises Raimondo and Ottone Boverio di Busca. Destroyed during the wars that devastated Monasterolo from 1357 to 1363, it was rebuilt by the Marquis of Saluzzo between 1363 and 1378, that is, before the assignment of the fief to the Solaros.
In fact, the massive structure preserved intact to this day, as well as the three corner towers and the cylindrical tower located to the south-west, the only evidence of the first system, together with the perimeter moat and the door called "Rivellino", date back to this period.
Important renovations were carried out between the 16th and 17th centuries, and involved the restoration of some rooms adorned with clap vaults, the construction of the three-ramp staircase on pillars, and the roofing of the building with a tiled roof. The fine carved and painted coffered ceilings in the two salons on the first floor belong to the early seventeenth century. During the following century, the rococo decorations of the two halls on the mezzanine floor were created (the so-called "golden room" is pretty, for the richness and finesse of the chisels and for the six pretty paintings set in the walls, depicting some bouquets of flowers and busts of two women), and the construction of the north pavilion of the castle with the consequent opening of the entrance on the homonymous square.
The last intervention concerned, at the beginning of the nineteenth century, the erection of the wing facing north-west to complete the facade.
Countess Maria Solaro di Monasterolo, wife of the knight Carlo Buglione di Monale, with deed of January 3, 1928, sold the castle to the municipality of Monasterolo.