Well, i kinda think the metal gear solid series are adventure too.
its very story driven.
and if you like zelds, you should def get Okami !
God of war is adventure too, the travels, and the story..
Onimusha series had adventure elements..
and lets not forget :
http://www.gamespot.com/ps/adventure...html?q=dragons
If you can find this one, play it.. very cool..