This really is great museum - they always have a spectacular exhibit or two, and the collection that is there consistently will not disappoint. It's even better when you have a picnic in the sculpture gardens before or after visiting the center.
The Walker Art Center I'd say is the best in the country from all others that I have attended. With the sculpture gardens near by and Loring Park no to far away, makes the experience more relaxing and calm. The art works in the center are awe insiring.