alan_gr
A tricky one to tag. I have had a go here, also changing it from node to area as it is quite large and a prominent landmark: https://www.openstreetmap.org/way/559807839. No doubt other tag combinations are possible. Also I have seen it called "Castillo de la Mota" but am not sure if this is "official" enough to be in the name=tag, maybe it should be alt_name or local_name.