Vacuum airship project of an Italian Jesuit priest Francesco Lana de Terzi

The Jesuit Francesco Lana de Terzi describes in his treatise "Prodomo" a vacuum-airship-project. This is considered to be the first realistic, technical plan for an airship. (on exhibit in the Museum). Lana writes: "God will never allow that such a machine be built…because everybody realises that no city would be safe from raids…"