Healing environment, for healthcare buildings describes a physical setting and organizational culture that supports patients and families through the stresses imposed by illness, hospitalization, medical visits, the process of healing, and sometimes, bereavement. The concept implies that the physical healthcare environment can make a difference in how quickly the patient recovers from or adapts to specific acute and chronic conditions. Background The original concept of the healing environment was developed by Florence Nightingale whose theory of nursing called for nurses to manipulate the environment to be therapeutic (Nightingale, F. 1859). Nightingale outlined in detail the requirements of the "sick room" to minimize suffering and optimize the capacity of a patient to recover, including quiet, warmth, clean air, light, and good diet. Early healthcare design followed her theories outlined in her treatise, "Notes on Hospitals". Following the discoveries by Louis Pasteur and others which lead to the Germ Theory, plus other technologies, the role of the environment was dominated by infection control and technological advances. Starting in the 1960s, healing environments have been linked with evidence-based design (EBD), giving the concept a strong scientific base. While in some respects it can be said that the concept of healing environments has evolved into EBD, it's mainly in the area of reduction of stress that this overlap occurs; as EBD goes beyond the healing environments dimension to consider the effect of the built environment on patient clinical outcomes in the areas of staff stress and fatigue, patient stress, and facility operational efficiency and productivity to improve quality and patient safety. A 1984 study by Roger Ulrich found that surgical patients with a view of nature suffered fewer complications, used less pain medication and were discharged sooner than those who looked out on a brick wall. Since then, many studies have followed, showing impact of several environmental factors on several health outcomes. Today, the philosophy that guides the concept of the healing environment is rooted in research in the neurosciences, environmental psychology, psychoneuroimmunology, and evolutionary biology. The common thread linking these bodies of research is the physiological effects of stress on the individual and the ability to heal. Psychologically supportive environments enable patients and families to cope with and transcend illness. Goal The goal of creating a healing environment is to reduce stress, and thereby reduce associated problems such as medical error, inability to concentrate, and physical symptoms of stress that can affect logical