A lot of aquariums show you fish from all over the world, the stranger or rarer the better. This aquarium does a great job with (mostly) just the fish from the Great Lakes area, naming its display areas after local places like "St. Louis River" and then featuring aquatic life from there. It's not real big; you can see the whole thing in two hours even if you systematically read all of the information posted, but be sure to allow another hour or two if your kids discover the toy boats in the Great Lakes play-pond! The displays are really very well done, and the demonstrations-- fish-feeding, turtle and sturgeon petting-- shouldn't be missed, if they are on when you're there. The schedule is usually posted online.