This course explores the complex Mediterranean world of the first half of the thirteenth century by tracing the colourful life and career of King Frederick II (1194-1250), known in his time as a 'wonder of the world' for his cosmopolitan court in Sicily, his knowledge of languages (including Arabic), his engagement with science and philosophers from around the world, his many titles (king of Sicily, Italy, Burgundy, Jerusalem, and Roman Emperor) and his ex-communication (three times) by the most powerful popes of medieval Europe who labelled him an Antichrist. The course examines key sources for Frederick's reign, particularly Frederick's own laws and contemporary chroniclers, and surveys major developments for context to Frederick's reign, such as the Norman inheritance in Sicily, relations with the Islamicate world, the rise of mendicant orders, Pope Innocent III and the international papacy, early universities, and scholastic education.