Density diversifies the public realm. At any given moment, a sidewalk can transcend its primary function to become something else — a stage, a phone booth, a cafe, or even a gym. Each city dweller defines his or her own urban room. These temporary and simultaneous changes of use are sometimes elusive at first glance and can only be seen with a closer look. This is a selection of moments — first photographed and then further studied through a hand-drawn lens — that articulate the vibrancy of a particular time and place within the urban fabric.