ArianeGroup's Les Mureaux site is a private launcher-development, manufacturing and final-integration facility. ArianeGroup's current industrial-sites directory identifies production resources for machining, forming and welding large parts, surface treatment, testing and inspection, and specifically places Ariane 6 metal-structure production, the cryogenic main-stage final assembly line and Themis stage assembly at Les Mureaux. The site also houses ArianeGroup's Helix space-surveillance command and control centre and headquarters. The current site address is 66 Route de Verneuil, 78130 Les Mureaux, France; an independent mapped industrial footprint is named ArianeGroup. The reviewed operator sources do not establish general visitor access, so contact ArianeGroup before planning a visit.