The main idea for the project for the Museum for Children of Louisville is based on the simple analysis that one of the most important thing for a child is his play-box. Thus, the museum proposes spaces with multiple treatments, reflect of the diversity of toys contained in the box. Each space is one moment of discovery and has a ludic spirit. The central atrium is at the heart of the project, it offers an overall vision of the giant play-box. To cause, the child curiosity, was one of the major challenge of this project. A space is entirely dedicated to them. In addition, this museum is the expression of a three-dimensional architecture where each space were created with the same attention in order to have a project of high cultural value.