http://revach.net/lists/article.php?id=9

Section: Places   Category: Heaven
TAGS:Shiva Reki'im
7 Heavens
1    Rakia - The sun, moon, and stars reside there.
2    Zvul - The Mizbei'ach shel Ma'ala where Malach Michoel is the Kohen Gadol and is Makriv Korbonos
   Vilon    
4    Shechakim -
The mill where the Mun for the Tzaddikim is ground is found there.
5    Machon - Where the snow, and storm winds reside.
6    Ma'on - Where the Malachim says Shira at night.
7    Aravos - Where all the storehouses of Bracha and Chesed can be found.
        
    This should not be taken at face value.  Comments and explanations are appreciated.