This sanctuary, located about two kilometres from Peschiera near lake Frassino, has housed a small statue of the Madonna, believed to be miraculous, for over four centuries. It is said that in 1510 a farmer working an a field was saved from a snake by the intervention of the Madonna after he had called for her. The snake fled and a statuette of the Madonna with child appeared, surrounded by a bright light, in the braches of an ash tree (frassino). The farmer took the statuette home with him, but shortly afterwards it reappeared between the branches of the ash. It was then decided to have a sanctuary built on the site by the Franciscan monks in 1518. The façade of the church, which has been restored several times, dates from the XVI Century.

Inside the sanctuary are ten chapels with frescoes by Veronese artist Paolo Farinati (1524-1606). One of the chapels houses the miraculous statuette, set on a branch of the original ash tree.