The coat of arms of Castile was the heraldic emblem of its monarchs. Historian Michel Pastoureau says that the original purpose of heraldic emblems and seals was to facilitate the exercise of power and the identification of the ruler, due to what they offered for achieving these aims. These symbols were associated with the kingdom, and eventually also represented the intangible nature of the national sentiment or sense of belonging to a territory.[1]
The blazon of the arms of Castile is:
Gules a triple-towered castle Or masoned Sable and ajoure Azure.[2]