Stumble into just about any church and you’re likely to see some impressive art and architecture. There are a few, however, with altars by Caravaggio and other Renaissance and Baroque masters that will leave you awestruck.

On Piazza del Popolo, the church of Santa Maria del Popolo holds two of Caravaggio’s masterpieces: the Crucifixion of Saint Peter and the Conversion of Saint Paul. Raphael, Bernini, and Pinturicchio also contributed to its splendid interiors. Near Piazza Navona, the smaller, unassuming church of San Luigi dei Francesi displays three of Caravaggio’s greatest works: the Calling of St. Matthew, Matthew and the Angel, and Matthew’s Martyrdom.