On Saturday, 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!"). The Bavarian festival takes place over 17 days, and some 6 million people are expected to attend. 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. People stretch out to reach a beer mug in the Hofbräuhaus-tent after the opening of Oktoberfest, in a beer tent in Munich, Germany, on September 17, 2011. Opening day of the 178th Oktoberfest in Munich, Germany.