Beer is one of the oldest alcoholic beverages in the world, with a history dating back to the 6th millennium BC. It's the world's third most popular drink, following water and tea. Beer festivals take place all year round. Here are the top 10 best beer festivals around the world going on in May. Just check the listing to find any celebration near you, and show up there to try the amazing beers.

   2011 World Expo of Beer, Frankenmuth, Michigan, USA

   May 20-21

The World Expo of Beer is held every year in Frankenmuth, Michigan as a fund-raising event for the community. It's said to be "Michigan's largest beer sampling event". This year's expo will take place in Frankenmuth's Heritage Park. At this beer sampling event, over 250 types of beers from around the world will be served.