Due to some reasons such as regulation of the law, ensuring security, living area of nursing home residents has been generally limited within facilities in Japan. However, several efforts have been made recently by better utilizing living environment in order to improve their quality of life. Among these efforts, there is one new trial started in 2003 by a large-scale nursing home in Hiroshima Pref., Japan. The effort, called “Satellite Day Room(hereinafter, SDR)”, intends to expand living area of the nursing home residents and to reconstruct their life and to improve their mental and physical state by actively utilizing the outside environment. For this trial, eight residents with dementia but with comparatively high moving function were selected from the residents of the dementia ward in the facility. Accompanied by two staff, the eight residents commute to a SDR base that is approximately 500m far from the facility on foot and spend daytime from 10:00 to 16:00 everyday. The base is an ordinary town house located in a residential area and they also expand their living area by using the town house as a base of their living activities. This study aimed to clarify how SDR, going-out behavior from the large-scale facility, effected the nursing home residents with dementia. We compared their activeness by using a precision pedometer before and after starting SDR. Also, behavior tracking surveys were conducted to examine changes in their behaviors and interaction with the environmental elements - objects, people and nature - seen in the facility, in the SDR base, and in their commuting to and from the SDR base. After experiencing SDR, namely experiencing going out of the facility, commuting to and from the SDR base with interacting with the outside environment, and spending daytime at a home-like environment of the town house in residential area, the residents showed increased activeness, and showed increase in interaction with the surrounding environment and improved connection between their behaviors.