This research focuses on four main topics: children’s 'cognitive developments it relates to age-appropriate interior design; children’s healing environments; public spaces in hospitals – interior architecture and interior design; contextual issues –specifically, the religious, ethnic and national context of Palestine. Literature indicates that research is needed in the design of healing environments for children to create spaces that are child-friendly and meet their cognitive development needs. In Palestine, qualitative data were collected during nine co-design and co-creation workshops that included arts-based activities and semi-structured interviews. Participants included children from 3-18 years, parents, medical staff, and four groups of designers. The study uses a thematic analysis approach for analysing the qualitative data. The results of the analysis were sorted into main themes and sub-themes. The key findings of this study inform guidelines and recommendations for the design of children’s hospitals, particularly public spaces in the context of Palestine.