This article seeks to analyze how aristocratic ideology, during the reign of Juan II of Castile, was sacralized through noble festivals. These celebrations followed a ceremonial and ritualistic protocol marked by ostentatious costumes, luxury objects, banquets and recreational activities. The analysis proposed here is based on the contributions of the New Political History and Sensory Studies. It will explore the relevance of these two perspectives for the study of medieval political culture; the forms of political sacralization of the aristocracy; and, finally, the way in which such celebrations were represented in the documentation of the time. These assumptions will serve as the basis for interpreting the festivities held at the court of Álvaro de Luna (1390-1453) in Escalona in 1448, as described in Gonzalo Chacón’s Crónica de D. Álvaro de Luna, Condestable. Álvaro de Luna, Condestable de los Reynos de Castilla y León.