This article tackles the topic of the health spaces and well-being of children hospitalized at the pediatric care in Chu Banta, Algeria, with a focus on the therapeutic garden based on the model of health architecture. In hospital therapeutic gardens, patient health and well-being are crucial, particularly in children’s hospitals because children are often more vulnerable than adults. The aim of this research was to examine the opinions and preferences of children and therapists on the components that should be considered when designing a therapeutic garden for children in hospitals, taking into account factors such as age, disease, and mental health. To do this, 50 hospital therapists employed by the hospital and 200 sick children looked at 100 simulated images and answered questions. The results showed that there was no discernible difference between the therapists’ and patients’ preferences for a children’s hospital environment. The children in the hospital preferred cartoon characters, animal motifs, and geometric designs. They also enjoyed crying trees and called for furniture in plant forms. The hospital garden has flower beds and water fountains installed. Outside the service, this study has demonstrated that therapists are capable of becoming experts in identifying children’s preferences for wellbeing in the therapy garden. These results can also be applied to studies on children’s preferences in situations where it is more difficult to assess the preferences of the subjects’ directly. Therefore, these results may aid architects and designers to create more child-friendly hospital environments.