Even before opening , Mall of America had earned several nicknames , including `` The Megamall '' ( or `` The Megamess '' during construction ) , `` Sprawl of America '' , `` Hugedale '' ( in reference to the four major `` Dale '' shopping malls within the Twin Cities , Rosedale , Southdale , Ridgedale and Brookdale ) and , simply , `` The Mall '' . Even before opening , the Mall of America had earned several nicknames , including `` The Megamall '' ( or `` The Megamess '' during construction ) , `` Sprawl of America '' , `` Hugedale '' ( in reference to the four major `` Dale '' shopping malls within the Twin Cities , Rosedale , Southdale , Ridgedale and Brookdale ) and , simply , `` The Mall '' .