Taking a gander at clouds around the summit of Ganon's Castle truly shows the power of 64-bit. No game for N64 accomplishes this level of beauty in form and complexity. Only thing I can say that didn't give it a 10 in this category is the rather low to moderate occurance of polygon pop-up and tearing. Traveling though Hyrule, you will get the sensation of journeying to mystical kingdom filled with magical creatures and fantastic worlds. Indeed, many aspects of Zelda's enviromnent are portrayed by the sound effects.
Day is signified with the crow of a rooster, and night with the howl of a wolf.
There is trickling water, cranking windmills, birds, crickets, and object impact realism. In some locations the BGM can be repetative or rather dull. It seems that a 30 second refrain was looped continuously. Hyrule Field has a Star Foxy theme to it, but the Kakariko theme has been maintained. It would have been nice to see that in all its symphonic glory.