If you like live theater performances, go and see a play or other stage show at Arts Block/Grand Theatre. Check online to see what's still available.
You'll be spoiled for sightseeing choice when visiting Wausau. Arts Block/Grand Theatre is an ideal place to begin here, but there are many other fine spots to appreciate. Granite Peak Ski Area, Rib Mountain State Park, and Sylvan Tubing Hill are close to the arts and culture attraction and will round out your day nicely.