The existence of a fortified structure in Soliera is mentioned for the first time in a papal bull of 1153 but a previous document certifies that in 1106 there was already a "castrum", that is, a fortified settlement.
In the communal period Soliera was under the dominion of the Municipality of Modena. The exact date is not known but probably around 1325 it was destroyed, by the Bolognese and pontifical troops or by the armies of the Lombard League.
In 1370 the Este family prevailed: they conquered Soliera and built a fort, described in the documents of the time as a "well-equipped castle".
After various vicissitudes, the castle returned to the Este family who, in 1636, sold it to the Campori family for 50 thousand scudi.
The first Marquis of Soliera was Pietro, a trusted man of the Borghese family and a very influential figure of the clergy, so much so that he came close to being appointed pope.
In the over 300 years of their stay, the Campori extended the castle and made many interventions, which definitively transformed it from a fortress to a noble residence. Their coat of arms - a shield bearing two eagles and six six-pointed stars - is painted and sculpted in many places in the castle.
The Campori family remained owners until 1976, when they ceded the castle to the parish. In 1990 the castle was purchased by the Municipality of Soliera, which has since completely restored it and used it as a seat of services and activities open to citizens.