Say a prayer, bow your head and perhaps even light a candle in Co-cathedral of Saint Mary. This splendid religious building may not always be accessible, so check ahead for times if you'd like to see inside.
If you like the word "free" as much as most travelers, you'll be glad to know this principal church is just that! Co-cathedral of Saint Mary is located in Castello de la Plana. If you want to keep your itinerary full while you're in the area, also drop by Gran Casino Castellon, Club de Golf Costa de Azahar and El Madrigal Stadium.