"let us suppose we are walking through a town: here is a straight road off which is a courtyard, at the far side of which another street leads out and bends slightly before reaching a monument. leaving the courtyard we enter the further street. again a new view is suddenly revealed although we are travelling at a uniform speed. finally as the road bends the monument swings into view. the significance of all this is that although the pedestrian walks through the town at a uniform speed, the scenery of towns is often revealed in a series of jerks or revelations."
gordon cullen, the concise townscape.