Theresienwiese is a large open space located in Munich, Germany. It is best known as the site of the annual Oktoberfest, the world's largest beer festival, which attracts millions of visitors each year. The area covers approximately 42 hectares and is surrounded by various attractions, including amusement rides and food stalls during the festival. Originally established in 1810 to celebrate the marriage of Crown Prince Ludwig to Princess Therese of Saxe-Hildburghausen, Theresienwiese has since become a cultural landmark. Throughout the year, the space is used for various events, including fairs, concerts, and exhibitions, making it a vibrant part of the city's social life.