www.inspain.org
The walls dates from the 13th Century.
Some blocks of the old walls can be seen running parallel to calle Fray Zacarías.
From 1 january to 31 december: 11:15 a.m., 12:45 a.m., 6:45 p.m.
2€.
Reduced price entry: 1€ (students and retired people).
Free entry: children under 12 years old.