The patroness of La Magdeleine is Saint Mary Magdalene, celebrated on 22 July. The parish church dedicated to her stands in the hamlet of Brengon.
On Monte Tantané lies the village of the Salassi, an archaeological site where several Iron Age finds have been unearthed, evidence of a Salassian presence in the territory already in pre-Roman times. Under Fascism, from 1939 to 1946, the town's place name was Italianised to La Maddalena d'Aosta.