The choir stalls retain the coats-of-arms of the knights of the Order of the Golden Fleece. In his first trip into Spain, Charles, the future Holy Roman Emperor, selected Barcelona as the site of a chapter of his Order. The king had arrived for his investiture as Count of Barcelona, and the city, as a Mediterranean port, offered the closest communication with other far-flung Habsburg dominions, while the large proportions of the cathedral would accommodate required grand ceremonies. In 1518 the Order's herald, Thomas Isaac, and its treasurer, Jean Micault, were commissioned to prepare the sanctuary for the first sitting of the chapter in 1519. Juan de Borgonya executed the painted decoration of the sanctuary.