We went north last weekend, searching for the headwaters of the Mississippi. Lake Itasca is the Official Beginning of Old Man River. There is a fabulous state park there, and one short afternoon picnic and walk was just enough to convince us we'll be back.
The kids were enthralled by the little waterfall at the beginning of the stream that becomes the Big River. I think they walked and waded and stumbled across the river 15 times! J. was the best and the fastest.
The Admiral and I watched, I got my feet wet, but couldn't balance on the rocks.