Abstract:Informal settlements form part of the socio-spatial landscape of urban areas. Yet little is known about their spatial aspects, compared to the social aspects. With global attention on sustainable cities and inclusive urban planning, there is a need to pay attention to the spatial dynamics of human behavior and interactions as they have ramifications for the sustainable planning and design of informal spaces. Using observation and mapping, this paper emphasizes the spatial dynamics of social interactions and human behavior in the indigenous settlement of the Abese quarter of La Dadekotopon, Ghana. Spatially, the study identifies a hierarchical, irregular, and open system of roads and alleys that support residents' everyday life. An "urban mixity" pattern of human behavior exists in the quarter, which denotes the social and physical use of informal urban spaces by residents to fulfill different needs at various times of the day. This creates lively urban spaces within the quarter. The location and physical characteristics, microclimate, and residents' needs have contributed to this kind of informal urban spaces. This paper argues for planning and design improvement that integrate, rather than supplant, existing local physical characteristics, social interactions and human behaviors to maintain local identity and sustain urban life.