Embedded in the heart of local heritage, Bats Discovery Arboretum is a Regional Nature, Public Festivals historic gathering located in Arboretum de Lisieux, 14100 Lisieux. It represents a modern continuation of historical festivities and fairs. The program strengthens the cultural bonds between the Norman people and their history. The public participates in an engaging array of professional-grade presentations and workshops. The social impact is significant, uniting diverse communities through shared appreciation. For academic scholars, it provides rich data on the evolution of modern festivals. Its annual occurrence ensures the long-term preservation of regional cultural roots.