Great Japan Beer Festival 2012 in Tokyo

It's the highlight of the year for Tokyo's hop heads: an afternoon of hardcore tasting, with over 100 varieties of craft beer on offer and the kinds of crowds you might expect on the Yamanote line during rush hour. The Great Japan Beer Festival celebrates its 15th birthday this year, and organisers are promising somewhere between 120 and 240 different varieties of brew, including many that are practically impossible to find anywhere else. Once you've paid the admission price, you're free to drink all the beer you can stomach for the next three-and-a-half hours (though bear in mind that you'll be supping it from a 50ml tasting glass each time). Note that admission is limited to 1,500 people for each session, and the event often sells out, so you might want to pick up a ticket in advance.