Musée Archéologique

Truly surprising Celtic, Gallo-Roman and Merovingian artefacts are displayed here, including a particularly fine 1st-century AD bronze of the Celtic river goddess Sequana standing on a dual-prowed boat. Upstairs, the early-Gothic hall (12th and 13th centuries), with its ogival arches held aloft by two rows of columns, once served as the dormitory of a Benedictine abbey.