On September 17th, the 178th 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!"). Oktoberfest is a three week-long celebration of Bavarian culture that delights around five million people each year making it the world's largest fair.
Last year, visitors drank more than 7 million one-liter mugs of beer. Attendance is free, but the beer will cost you: The price of a mug at any of the 14 tents this year comes to €9.20 ($12.60 U.S.). Gathered here are some of the scenes from Oktoberfest 2011's first weekend.