From 1985 March 26 to April 5, a special public astronomical education campaign was mounted in 16 stations of the Paris Metro. Apart from static displays, items included two planetariums, mirror-making, numerous round-table discussions, astronomical films, etc. Millions of people saw some part of these displays and surveys showed that many returned several times. The event was coordinated by the Association Nationale Science Techniques Jeunesse [National Association for Youth Science and Technology] and involved many official and private bodies, 30 astronomical groups, and 420 employees of the RATP [Régie autonome des transport parisiens – Paris city transport authority].