A trip to the museum is always such a special place to visit at any age. I encourage you to take a child and see it from their perspective. Expose them to artwork and also review proper museum etiquette. Keep the visit brief and focus on a few works of art.
Many museums have family tours which are wonderful. They usually are first thing in the morning which is a great time, while minds are fresh and the energy level is good.
Several weeks ago I took 2 girls to the Moma. I love hearing how they view the work and what they deem "good" art.
Do you go to the museum, which one and how often? Did you go to the museum as a child?