Sun Gate

The crest of the Puerta do Sol Tower is the work of D. Alfonso of Acevedo and Zúñiga (Count between 1513 to1559), that allows us to suppose that the restoration of the walls of the town was down to him. He appears crowned with the heraldic crown and headed by the Fonseca family (five stars in asp) and reminds us to his archbishop grandfather, who acquired the town to give it to him.
It also appears the coats of arms of the Zúñiga (band, brooch and a chain of eight rings), his grandmother and the Biedma (eight cauldrons). In the lower barracks figures the coat of arms of the Acevedo (pair of wolves and holly), surname inherited from his father, and Ulloa (with squares in the shape of three horizontal fesses), the first count of Monterrei, also the grandfather of Don Alfonso.
If another coat of arms existed on the door of San Francisco, everybody that would enter into Monterrei would know who the first lord of the town was.