Casa das Ciencias is the most compact of A Coruña's municipal science museums, set in Santa Margarita Park rather than on the waterfront. Inside, the emphasis is on hands-on science, simple experiments, and a planetarium, which makes it especially useful for families.
It pairs well with a relaxed park walk, or as a gentler alternative when the weather turns rough on the coast. If you are choosing only one science stop, Aquarium Finisterrae and Domus feel more tied to the city, but Casa das Ciencias is friendly, affordable, and easy to enjoy.