Church of St. Louis of the French | Piazza di San Luigi dei Francesi (click for google map) | saintlouis-rome.net | San Luigi dei Francesi on Wikipedia
Quick fact: San Luigi dei Francesi is the home of three magnificent paintings by Caravaggio, The Calling of St Matthew (1599-1600), The Inspiration of Saint Matthew (1602), and The Martyrdom of Saint Matthew (1599-1600), in the Contarelli Chapel.
