Why not roll the dice with a visit to Gran Casino Castellon during your visit to El Grao de Castellón? While you're in the area, stroll along the marina.
Enjoy the collegiate vibe when you visit Jaume I University, during your trip to Castelló de la Plana. Make time to visit the casinos and spas while you're in the area.
Though Provincial Hospital of Castellon might be what brings you to town, perhaps you'll have a chance to explore more of Castelló de la Plana while you are here.