The document compares the built environments of three different types of libraries - two public libraries and one academic library - to understand how their designs differ based on their objectives and target users. It discusses how the Connemara Public Library, Anna Centenary Library, and IIT Madras Central Library were designed and have adapted over time to remain relevant. Key differences noted include a shift from formal to more open and accessible designs, a focus on natural light, disability access, and providing additional public spaces beyond just bookshelves.