Yeah, I heard it was misty and cold in Zaragoza. Paloma mentioned it in her comments and also one of my students, who drives karting and went there for a race. They had cancelled a few slots because of the fog.
The triangular tower, as I read on the board, is the only one in Spain in such a shape. Strategically always perfect spots for the castles and fortresses, there on the hills or little mountains! Smart people they were :)