This paper provides a literature review to analyze the influence of built environment attributes on walkability. The search identified 32 built environment attributes that were assessed by using 63 measures. Intersection density, residential density and land use mix were the most used attributes for assessing walkability, namely by using objective methods, such as ratios and spatial score tools. Aesthetics, including building aesthetics, was positively associated with walking It was also found to be a strong determinant of recreational physical activity. Human scale, enclosure and imageability were also found to be important factors, with buildings making a significant contribution.