Pixie Park is a volunteer-run cooperative playground for children ages six and under and was founded in 1952 by Mrs. Terwilliger and the American Association of University Women (AAUW). It was started as a safe place to play for the children of volunteers who were working at the Marin Art and Garden Center. Within a year, 30 families were using it and they saw a need to expand this special place for children. Today, the Park boasts more than 450 families in membership. Through a variety of fundraisers, members continue to maintain Pixie Park as a clean, safe place for children and grandchildren, as well continuing to support and maintain the Marin Art and Garden Center.