San Jose has a temporary exhibition of 12 steel sculptures in the Plaza de Las Madres by the artist Pereda de Castro. The sculptor says he gets his inspiration in “mythology and the sea”. They’re next to the new kiosk, so you can get some refreshment while you admire the art.
I don’t know how long they’ll be staying there, so if you’re planning to go, I suggest you do it sooner rather than later since they’ve already been to Madrid, Santander and Valladolid and are clearly in demand. (On the other hand, they’re quite big and obviously heavy, and not something you’d move every five minutes.)