We love the Mall of America as a weekend getaway. Make time to at least walk through Camp Snoopy and take in a few rides (the Ferris Wheel is great and the roller coaster isn't a very scary one). In Camp Snoopy you can find a plaque that shows where home base of the old Twins Stadium was.
Underwater World is not to be missed! A really nice walk through exhibit, a moving sidewalk through two different tunnels with sharks, rays, etc. gliding right about you. Last time we were there (last year) they even had a small pool with baby rays in it that you could pet.
It is fun to walk past some of the unique stores . We usually drive up on a Friday night, spend all day Saturday at the Mall, and then drive home Sunday.
Tired of walking? Take a break at the food court, eat at one of the many themed resturants, or take in a movie!
Check out the Mall's website - lots of fun things.
Oh, and if you love Beaver Tails at WDW - there is a Beaver Tail counter at the mall as well!