MASS MoCA, the contemporary arts museum in North Adams, MA holds its annual free day February 9, 11am to 8pm. Admission is normally $15 for adults, and $5 for kids ages 6-16, so for a family this is a significant savings. MASS MoCA is in the Berkshires, where you can find plenty to do to entertain a family.
On the free day at MASS MoCa, you can tour the galleries or take part in a full day of activities, performances, tours, face painting, and an Elevator Music Festival.
Free tours start in the lobby at 11am; there is another every 30 minutes until 6pm.
You can check out the exhibit, Xu Bing: Phoenix, which opened at the end of December, in Building 5.
The Elevator Music Festival goes all day in the large Building 4 freight elevator. Throughout the day, there will also be pop-up concerts in the galleries.