Complex sentence: Most of Westeros is reminiscent of high medieval western Europe, with castles and knightly tournaments; the scheming Cersei evokes Isabella, the "she-wolf of France" (1295--1358).
Split into simpler sentences: Most of Westeros is reminiscent of High Medieval Western Europe, with its castles and knightly tournaments. The scheming Cersei, for instance, calls to mind Isabella, the "she-wolf of France" (1295--1358).