Oktoberfest is the world's largest Volksfest (beer festival and travelling funfair). Held annually in Munich, Bavaria, Germany, it is a 16- to 18-day folk festival running from mid or late September to the first weekend in October, with more than 6 million people from around the world attending the event every year. Locally, it is often called the Wiesn, after the colloquial name for the fairgrounds, Theresa's Fields (Theresienwiese). The Oktoberfest is an important part of Bavarian culture, having been held since the Middle Ages. Other cities across the world also hold Oktoberfest celebrations that are modelled after the original Munich event.