harmony and unity: there is repetition and continuation.
balance: it is symmetrical, a tree on the left is balancing that on the right.
pattern: the bricks shows a certain pattern.
proportions and scale: they all have the same scale.
variety and unity: they are all things that can be used in writing or drawing however they are different.
rhythm: stairs represent a rhythmetic order.
movement and rhythm:
the wheels give the feeling of movement, and rhythm is found in the white similar boards.
emphasis: it emphasises the greatness in this place and shows that something great takes place there.
pattern: the leaves of the trees has a certain pattern.