The dynamism of Tokyo streets accommodating people and cars in the necessary space to move and connect between buildings, constitute the public realm where daily encounters are taking place. The aim of this research is to find those paused activities of pedestrians to identify sources and patterns enhanced by the commercial streets as Ephemeral Public Space. Analyzing two streets in Ura-Harajuku as a case study, this thesis analyzes the spatial characteristics linking the street and the ground floor of the shops. The results show a variety of activities associated with the commercial streetscape experience in Japan.