The patrons of Suello are Saints Quiricus and Julitta and Saint Blaise, and the patronal feast is celebrated on 3 February, the day of Saint Blaise; the Chiesa dei Santi Quirico, Giulitta e Biagio is named after them.
The municipality of 1,686 inhabitants in the province of Lecco also holds the Grotta della Madonna and the Ecomuseo Lago di Annone.