Libraries are increasingly expected to serve as dynamic, engaging environments that support learning, creativity, and social connection for children and teens. This session explores how intentional design choices can transform youth spaces from passive service areas into active, interactive environments that respond to evolving community needs. Examples will be shared from recently renovated and newly constructed public library spaces across multiple systems, including several award-winning projects, this presentation will highlight practical design strategies that support play, exploration, collaboration, and teen engagement. Attendees will examine how elements such as flexible layouts, interactive features, embedded technology, sensory considerations, and age-appropriate zoning can foster meaningful experiences while remaining adaptable over time. An example of a re-design of an existing children’s space at a Main Library will be shared that shows a correlation between the new design and an increase in user visits and circulation. The session will also address how libraries can balance creativity with operational realities such as durability, supervision, inclusivity, and budget constraints. Participants will leave with concrete examples, guiding principles, and a framework for evaluating or reimagining their own children’s and teen spaces, whether planning a major renovation or making incremental improvements within existing footprints.