It was built in Pere el Cerimoniós days, in 1366. It is the most important medieval military work of Catalonia. It has a 1500 meter perimeter with 31 towers, 2 tower-gates and many battlements. 
The wall is divided in four stretches: Sant Francesc Wall facing south, Sant Jordi Wall facing west, Santa Ana Bastion facing north and Santa Tecla Wall facing east. Sant Francesc and Sant Antoni gates are situated between two towers at the ends of Carrer Major. They were demolished in 19th century. However, the latter was rebuilt.