"Not quite sure what you mean about organic. Do you mean that the roof lines and fronts aren't all on the same levels? or..."  My observation was purely subjective, so you may not see things the same way. The row of canal houses above has many lines that diverge from the perfect horizontal and vertical, 'til they are slightly diagonal.  Some have a slight angle of lean, and sometimes individual windows, doors and cornices have a different angle than the building they are on. There is no gap between the bldgs and they fit together almost like living cells.