Project management is often seen as a time of transition in organizations (ERP conversions, development of new services, etc.). This point of view means that any project, although by nature limited in time, leaves a legacy that persists beyond the length of the project. However, once a project is no longer a tool for change, but rather the raison d'être of an organization, as is the case in the events industry or in emergency humanitarian aid, the question of its legacy seems more complex to address. Based on the literature on temporary organizations, temporary logistics, and the notion of the pulsar effect, this paper focuses on the logistical legacy that can be left by major cultural events and the consequences of this legacy on the economic dynamics of a territory. Based on a qualitative empirical study of 20 music festivals in France, this paper demonstrates a positive impact on the territorial economic dynamics of towns that host music festivals. The main contribution of this paper is to highlight a probable link favoring a strong economic dynamic between the existence of a recurrent event and the oversizing of logistical infrastructures.