Well, there might not be renfaires as they work in the US... But the medieval is HUGE is Sweden, since we have such a rich history there. :-) So, each year in the city of Visby on island of Gotland (that has a lot of the medieval buildings left) there is this HUGE medieval celebration that beats most things, or so I have been told. :-) And I have talked to both american and australian and british visitors those years I have been there. A whole week of living the medieval life with all what comes with it... Beat that! :-D

Medieval Week in Visby, Gotland (http://www.medeltidsveckan.com/medieval/)