Commercial and residential streets provide a harmonious ensemble in this traditional quarter of old townhouses, which was built during the reign of Louis XV. The "Carrés Saint-Louis" square is particularly attractive. Don't miss the Salle du Jeu de Paume, one of the key locations of the French Revolution, the sober Saint-Louis cathedral, and the Potager du Roi (the king's vegetable garden), which is laid out near the palace.