Had a wonderful time here, me and my husband spent all day here, €5 entry for the science Museum and the Garden. Loved the Mineral section and the Dinosaurs too. My husband loved the practical Physics section, as well as the math games. Yes a lot of it was in Portuguese, but then again you are in Portugal ??. You can even leave the Museum and go for lunch and come back later. All staff speak English and are willing to help and explain things.