http://en.wikipedia.org/wiki/Drug_policy_of_the_Netherlands
Curious: you have to read this through a Wikipedia filter (i.e. take best guess when hit with inconsistent information), but as it turns out, it’s actually illegal to sell or grow marijuana in the Netherlands … it’s just more-or-less officially—and consistenly—unenforced. (Mostly because of various international treaties to which the Netherlands is a signatory, it seems.)