Everyone remembers their first school visit to a natural history museum. It is simply an incredible experience to look at the huge skeletons of extinct dinosaurs or even touch a real meteorite.
Athens has several natural history and science museums and foundations. And as the starry sky and the cosmos were already a topic for the ancient Greeks, there are also observatories and a planetarium.
▶︎ Goulandris National History Museum
▶︎ Eugenidis Foundation (Planetarium)
▶︎ National Observatory of Athens (Visitor Center Thissio)
▶︎ National Observatory of Athens (Visitor Center Penteli)