The image displays a flag with a vibrant yellow background and a red stripe running along the bottom edge. The flag features a coat of arms in the center, which is a common symbol on many national flags. The coat of arms includes a shield with a castle and a lion, along with a crown and a banner with the text "Puertos y Castilla" which translates to "Portugal and Castile." The flag also has a crown on the top left corner, which is a traditional element in many European flags. The overall design is simple yet colorful, with the red stripe providing a striking contrast to the yellow background.