Humans, like most animals, have a natural inclination to look for the source of running water. In a large garden, water can be used to unify areas with contrasting moods. To do this you will need to have a water feature in each area. Water can express a number of moods. Still water is serene, fountains are theatrical, water rushing over rocks is exuberant.
Water features can help to create contrasting moods while they unify a garden.
Gardens can be predominately introverted or extroverted. An extroverted garden is one which is open to view. If it is open to view from a public highway, it is very extroverted. Introverted gardens are private, secret gardens, gardens in which you feel protected from the outside world. A secret flower garden can lead to a walk which becomes increasingly shady, increasingly introverted.