Calatayud is a small town. The nicest thing to do is to walk through the small streets where you find little architectural treasures which sweeten the view. One of them is the Home of the Collegiate Church of Santa Maria la Mayor.
The slope on which the tower is is incredible, next to the Tourist Office of Calatayud. As we were told, Queen Isabel II, used to sleep in the palace of Baron Warsage which is right in front of this tower, that's why it so high. It was ordered to be removed, for fear that it would fall onto the palace.