In the Plaza del Triunfo and in Calle Romero Murube we can see a fragment of about 150 meters of the original walls of the 'Dar al-Imara' or 'Casa del Gobernador', the original Alcázar built in the Caliphate period, at the beginning of the 10th century.
It is the most monumental and beautiful canvas of the wall among those preserved in the city. Unlike the rest of the Sevillian walls, here they were built using huge blocks of stone, many of them from the old Roman walls, which had to be demolished due to the growth of the city in the Islamic period.
Inserted in the wall, a series of seven towers with a rectangular floor plan and also raised with ashlars have been preserved. Both in the towers and in the wall you can see in the upper part the section increased by the Almohads, already in the 13th century.
In this wall canvas we find two doors. The closest to the Plaza de la Alianza is the Puerta de la Herradura, now blinded. It owes its name to its horseshoe arch shape, framed by an alfiz. Apparently, originally it gave access to a guard post or headframe, added to the wall during the extension of the Taifa period (XI).
In the Plaza del Triunfo we find the Gate of the Patio de Banderas, probably opened in the Almohad period (XII-XIII), as the two columns with capitals from this period that flank it on the patio side seem to attest. It is one of the few examples of Almohad columns preserved in situ that have survived to this day.
In the Almohad period, the canvas on which the Puerta del León is located today was also built. The towers that flank this door are, therefore, from different periods. The one on the left side, built with ashlars, is from the Caliphate period (X), while the one on the right was built in the Almohad period (XIII), mostly in brick. Next to this second one, and facing Miguel de Mañara street, you can see the original access entrance to the Almohad Alcázar, blinded when it was replaced by the current Puerta del León, opened during the reign of Pedro I (XIV).