Which wall is a windcatcher hung on ?

Question

i thought some one said that there was a traditional wall [direction--- n,s,e,w] that a windcatcher should be hung on to receive the most benefits from it. any ideas ?

Answer 1

the wall that catchs the first glint of sunight in the morning

Answer 2

You don't hang it on a wall - you hang it over a window so that the light of the dawn can burn the bad dreams away that the catcher caught.