A small church stands next to the parish church, built in the 18th century with a single-nave layout and vaulted roof. The facade is divided into two mirrors marked by a cornice: the lower one divided into three and the upper one concluded at the top by two volutes topped by a bell gable. In the past it was home to the Confraternita de Rosario, hence the name.
Intended for the vestments of the confraternity members, it was later also used for the scholastic and religious instruction of the children, strongly desired by the Martis and Caschili families.
The modestly sized building has undergone numerous tamperings that have unfortunately compromised the reading of its original appearance, and especially inside, the polychrome marble altar has been lost. The dedicatory plaque on the front, dated 1774, was donated, along with the marble simulacrum of the Madonna and Child, by Rector Fundoni.