Founded in 2005, Patrimoine L'Orignal-Longueuil Heritage (PLLH) is a non-profit organization. Its mission is to promote and safeguard the historical and cultural heritage of the village of L'Orignal in the municipality of Champlain, including the territory of the former Seigniory of Pointe-à-L'Orignac, through research and conservation activities, interpretation, and promotion.