I think the top 5 most famous gyms are (from west to east):
-Gold's, Venice, CA
-Venice Beach Gym, Venice, CA
-Metroflex, Arlington, TX
-Westside, Columbus, OH
-Bev Francis' Powerhouse Gym, Syosset, NY
-Temple Gym, Birmingham, England
Did i miss any? I still need to train at Metroflex...