How rural libraries influence their communities’ development is shown in a number of studies, and many of those rural libraries have focused on their roles in increasing the accessibility of technology for their local community. However, few focused on how rural libraries are immersed in their surrounding natural environment to empower the community members’ learning about and with nature. Also, there have been rare examples of rural libraries that support not only their local community but also another country’s sustainable development. The Baramsup Picturebook Library, located in a rural area in South Korea, is an exemplary case because it has provided a large range of programming and services for diverse groups of people (i.e., from children to older adults) from diverse levels of communities – from the local communities around the library to the global communities of a developing country, Laos. Through qualitative content analysis of an interview with the library’s director as well as their official blog and articles and reports from magazines, this chapter presents a case study of this library. The library’s services and programs are demonstrated under three themes: (1) rural, local communities: cultivating the book culture; (2) local and regional communities: empowering children’s ecological sensitivity; (3) with global communities: building school libraries for children in Laos. This case study of the Baramsup Picturebook Library provides conceptual and practical insights into how rural and small libraries initiate changes in people and communities, thereby impacting sustainable social changes in larger communities.