I have a video guide on how to get it, but when do you have access to that area of the map? I'm currently working on the quest series where you have to take the three companions to the different spots, ie "Fires in the Sky."
>X< Leader of The Dream Team >X< "He sat down to eat the ass end out of a giant rat" - fett44 <== Man I read that wrong. xD
Guide for accessing Snowglobe: Enter Salida Del Sol North via the Salida Del Sol House door. Exit house via stairs. Turn right. Go up stairs. Jump onto awning left of stairs. Head along awning in the Northwest direction until you get to a point where you can cross over to the southern side of the awnings. Head west along the southern side of the awning until you find the big, gaping hole in the wall. Enter hole, discover loot.
Don't try to enter through the Salida Del Sol Courtyard door, that way lies madness... and Cloud.