Certain houses with their interior Florentine staircases are remarkable. The first church built in 1740 and destroyed in 1936 gave its name to the rue Notre-Dame. The church dedicated to Notre Dame de Miséricorde is next to an old Franciscan convent, while the parish church of l’Île-Rousse, the Immaculée Conception de Marie, is on the west of the main square, with its enormous date palms (planted 1890) in the shade of which it is good to play a game of "pétanque".