Norma Iglesias-Prieto’s article is based on the films Wacha el border, created by twelve children from Tijuana, and Beyond the Border, created by ten children from San Diego. It aims at understanding the extent to which the U.S.-Mexico border is significant in children’s social representations of themselves and others. Focusing on the Tijuana/San Diego transboundary urbanized region, Iglesias-Prieto questions traditional representations and perceptions of the border.