Culturally diverse older adult learners are among the fastest growing age groups for which public libraries promote the needs of lifelong learning today. This article explores the past, present, and future of informal and non-formal public learning environments as safe and welcoming, with supportive educational programming provided by librarians and community volunteers. In light of an advancing 21st century learning framework, the aim of this article is to encourage adult learning practitioners to re-examine the public library to recognize a new world of potentiality in library learning for this population.