Facades of the buildings ensure the presentation. But it is frequently the backstreets that tell the true story. Not designed to be look at and owned by the inhabitants, it can provide an average look of an area, somehow generic but descriptive in the same time. Tokyo is associated with a certain look and feel ,especially at night. Discovering a guiding line, an urban canal in the backstreet area, was a formula to capture the look of the city. The peculiar lighting, omnipresent plants and concrete architecture create the elements of the urban mosaic. Japan as an island country was always dependent on water and a waterway captures the city’s essence.