My tip“Walk between the Puerta Alta and the Puerta Baja, past the fountain of the twenty spouts; spring is the best season.”
Long walls with towers and gates climbing the hills around Daroca, the city ruled by the Arab Banu Tujib.
Moderate effort
Buses from Zaragoza; the main street is flat between the two gates, but the walls climb very steep hills (at least an hour for anyone who wants to climb). No shade on the walls.
Address
Daroca, Zaragoza