I've been to Algonquin twice - first time about 35 years ago - camped in my van for a few days at a roadside campground in the park and did a little day tripping.  The most memorable bit of that trip was an exploration I did back into the oldest red pine forest I've ever been in.  The trees must have been three to four hundred years old, and all the same huge size.  No undergrowth, just rolling mounds of brown pine needles dimly lit on a beautiful, sunny day.  It was really eerie and disorienting.  I had no compass so I didn't go much farther in once the lake was out of sight.

The second time through about 10 years ago, we canoed in after picking up my brother who lived in Detroit.  I was expecting BW/Q and was really disappointed.  Way too many people on the entire route we took, and just seemed to be missing the northwoods feel.