(http://www.naturismo.org/images/logo_fen.gif)
and, from Spanish to English:
http://translate.google.com/translate?prev=hp&hl=en&js=n&u=http%3A%2F%2Fwww.naturismo.org%2F&sl=es&tl=en (http://translate.google.com/translate?prev=hp&hl=en&js=n&u=http%3A%2F%2Fwww.naturismo.org%2F&sl=es&tl=en)
One of their member clubs can be found here and it has a youth section too. Anyway, nudity is not illegal in Spain, did you know that? (see http://www.nudistday.com/index.php/article/public-nudity-is-completely-legal-in-spain.html (http://www.nudistday.com/index.php/article/public-nudity-is-completely-legal-in-spain.html))
Super country for it!
http://www.naturisme.cat/ (http://www.naturisme.cat/)