A review of 66 studies on the built environment and quality of life at residential health care centers found that nature-based design features like outdoor gardens provide a variety of positive outcomes including reduced falls, depression, agitation, and stress for residents living with dementia.
Joseph, Anjali, Young-Seon Choi, and Xiaobo Quan. “Impact of the Physical Environment of Residential Health, Care and Support Facilities (RHCSF) on Staff and Residents: A Systematic Review of the Literature.” Environment and Behavior, 48.10 (December 2016) 1203-1241. https://doi.org/10.1177/0013916515597027