The purpose of this master thesis is to create, test and evaluate an analytical instrument for children’s library environment based on a theoretical framework consisting of Howard Gardner’s theory of multiple intelligences and Thomas Armstrong’s pedagogical application of the original seven intelligences. We wanted to investigate whether the environment in Rum för barn stimulated all of children’s different intelligences. We also wanted to identify possibilities and liabilities within the analytical instrument. In order to test the analytical instrument we conducted observations on the physical environment of the Swedish children’s library Rum för barn. We did not observe the staff, visitors or social interaction in the library. The results of our investigation of the environment in Rum för barn implicated that all seven intelligences were stimulated by the physical environment. We analyzed the results in a discussion where we compared them to our empirical material consisting of research about children and environment from different scientific fields. Our conclusions of this master thesis were that our analytical instrument made it possible to investigate the physical environment of children’s libraries. It also determined whether the environment stimulated the seven intelligences according to the theory of multiple intelligences. The analytical instrument could therefore be used for the development of children’s library environments. We also identified some liabilities in the analytical instrument, mainly concerning the definitions of some environmental concepts, age adjustments and the fact that we excluded observations of social interactions. We suggested solutions to the liabilities and encouraged further research on the subject. / Uppsatsnivå: D