I think you mentioned the idea of seeing full-scale space rockets in one of your posts. At the air and space museum at Le Bourget (https://en.wikipedia.org/wiki/Mus%C3%A9e_de_l%27air_et_de_l%27espace) they have a few, although the Wikipedia page says that the Ariane 1 and 5 rockets are just models, but I seem to remember that the Ariane 1 was at least full-scale (it being so long ago when I visited that it was before Ariane 5 was around).