Was just standing in Darnassus Bank when it occured to me that i wanted to get ontop of the Bear + Eagle looking tree that resides above it (Don't ask questions, because i really don't know what runs through my head at times like these), 20m later i had found a way.
Step 1:
Step 2:
Step 3:
Step 4:
Step 5:
Step 6:
Step 7:
Entertaining Point A:
Entertaining Point B:
It's quite a simple walljump and doesn't cause much hassle at all, also note on Step 2 it's possible to jump straight from the Bank Roof to the Guild Bank Roof with a speed boost (Aspect, Swfitness Pot, Travel Form, Sprint etc) but as shown, it's still possible without one, just a little bit more tricky. Also note that in Step 4, i've shown two different ways of jumping, depending on what you find easier (Personally i find taking the left route easier).
Enjoy ^^
-Xaxiz