Calatayud is built along the shores of Jalón river. The city has the title "Muy noble, leal, siempre augusta y fidelisima ciudad de Calatayud". This city contains the tallest Mudéjar tower of Aragon in the church of "Santa María". The Muslim fortress is the biggest and oldest of the Muslim fortresses of the Iberic peninsula.
Calatayud was a first democratic municipality in 1977 because the elections was celebrate one day before all Spain for a visit of the King Juan Carlos I.