The image is a cover of a book titled "Exposición Internacional Barcelona 1929". The cover features a colorful illustration of a knight on horseback, holding a shield and a sword. The knight is wearing a full suit of armor, including a helmet, a tunic, and a cape. The horse is white with a red mane and tail, and it is galloping forward. The background is a mix of green, yellow, and blue colors. The title of the book is written in black text at the top of the cover, with the author's name written in smaller text below.