People drink different kinds of beer as they visit the Great British Beer Festival 2013, which started Aug 13 and will go through Aug 17, in Olympia, London, Aug 13, 2013. The event is organized by the consumer group Campaign for Real Ale (CAMRA) and opens for the 36th year to an expected 55,000 thirsty beer lovers. This year’s event will offer visitors more than 800 real ales, ciders, and imported beers, and plenty of entertainment and food. [Photo/icpress.cn]