For middle and upper-class families, there is a common trend of moving to less urban, more suburban areas once they have children. This shift is often driven by the perception that cities are crowded and lack sufficient space. However, cities can be more environmentally friendly since they tend of promote more use of public transportation and less personal use of a car, and leave more space for other activities. This article explores how GIS can be used to design cities that are more child-friendly.