Taras
Google
I didn't expect much from this place, but I was pleasantly surprised. It's good on different levels.
It starts from kind English speaking staff. Then you start the rout. And they managed to gently immerse you, little by little, into the bio world. Whoever designed the park did an incredible job. "Well, that was very nice. Probably that's it", you think. And then you get to another level of the park, that is even more impressive. Then you think, "For sure, now that's the end. What else could they show". But again they manage to show even more.
By far that was the best place I visited in Gijón. And I will definitely visit again.
Also it has areas where you can sit and just relax watching the aquarium.
And there are several clean bathrooms along the route.