The 24th of February is Flag Day in Mexico. The origins of our flag go back to 1821 and the Plan de Iguala, the peace treaty celebrating the end of the war of independence from Spain. The center image represents an eagle, perched on a cactus, devouring a snake. This symbol pays homage to an Aztec legend. The nomadic Aztecs settled Tenochtitlán (their name for what is now Mexico City) on the site where the eagle was seen in the year 1325.