From the beginning the museum was designed as an open and dynamic environment rather than a traditional gallery of objects behind glass. Its original building, supported by the Jerusalem Foundation, included large exhibition halls, workshops, activity rooms, and a science garden that encouraged visitors to explore natural phenomena outdoors. Over time the museum continued to expand. In 2001 the Discovery Center was added, doubling the public space and introducing new facilities that included the Henry J. Leir Auditorium, Hirschel Hall, laboratories, workshops, and a professional resource center for educators. A year later the Gideon Rafael Toddlers’ Sand Play Area opened, inviting even the youngest visitors to encounter scientific curiosity through tactile play and imaginative exploration.