This weekend, the 180th Oktoberfest opened in Munich, Germany, with the traditional tapping of the first keg of beer by Munich's mayor, Christian Ude, shouting "O'zapft is!" ("It's tapped!"). The Bavarian festival takes place in Munich's Theresienwiese over 16 days, and more than 6 million people are expected to attend. Attendance is free, but the beer will cost you: The average price of a mug of beer at any of the tents this year comes to €9.66 ($13.05 U.S.). Gathered here are some of the scenes from the opening weekend of Oktoberfest 2013.