Erected as a fortress at the turn of the 13th century, and then given by Francis I to Anne de Montmorency in the 16th century to convert into a summer residence, Fère-en-Tardenois Castle retains several relics of the Middle Ages and the Renaissance. Examples include the seven imposing round towers of the feudal motte, and the superb Renaissance bridge-gallery whose five arches cross over the fortress' moat.
Three kilometres south of the castle, at the centre of the small town of Fère-en-Tardenois, discover the old 16th-century grain market, with its chestnut wood frame and stone pillars. A market is held there every Wednesday morning.