The patrons of Casaloldo are Saints Gordian and Epimachus, celebrated on 10 May in the Church of the Beata Vergine Maria Assunta e di Sant'Emiliano.
The interior holds paintings of the Brescian school, a 15th-century crucifix, 18th-century confessionals, the white and green marble high altar from 1781, an 18th-century organ and two canvases by Antonio Paglia from the early 1700s, as well as a painting recalling the Battle of Casaloldo. The town also holds the Torre Casalodi and the Church of San Rocco e del Santissimo Sacramento.