It's 18 for almost everything here. The drink-driving limit changes at 21, but I don't think there's any significant legal changes otherwise.
Actually, I think the age-restriction system is one of the very few things I like about this country. At 13, you can stay home-alone for long periods of time, at 14 you can baby-sit, at 15 (but soon 16) you can drive, at 16 you can get married, have sex, and get gun licences, and at 18 you can drink unsupervised, the drink-driving limit goes up from zero, view porn, join the army, and several other things...
So this means I can walk around the house drinking Vodka Cruisers legally at age 14. Beat that, bitchaz.