The entrance is guarded by a pair of yakshis (mythical giants – 5 metres (16 ft) high statues). The eponymous image Buddha in brilliant green colour is 66 centimetres (26 in) in height with a lap width of 48.3 centimetres (19.0 in). It is carved in a yogic position, known as Virasana (a meditation pose commonly seen in images in Thailand and also in South India, Sri Lanka and Southeast Asia). The pedestal on which the Emerald Buddha deified is decorated with Garuda (the mythical half-man half-bird form, a steed of Rama, who holds his mortal enemy Naga the serpent in his legs) motifs It is central to Thai Buddhism. The image made with a circular base has a smooth top-knot that is finished with a "dulled point marking at the top of the image". A third eye made in gold is inset over the elevated eyebrows of the image. The image appears divine and composed, with the eyes cast downward. The image has a small nose and mouth (mouth closed) and elongated ears. The hands are seen on the lap with palms facing upwards.
The entire complex, including the temples, is bounded by a compound wall which is one of the most prominent part of the wat is about 2 kilometres (6,600 ft) length. The compound walls are decorated with typically Thai murals, based on the Indian epic Ramayana. In Thai language these murals are known to form the Ramakian, the Thai national epic, which was written during the reign of Rama I. The epic stories formed the basic information to draw the paintings during the reign of King Rama I (1782–1809). These paintings are refurbished regularly. The murals, in 178 scenes, starting with the north gate of the temple illustrates the complete epic story of Ramayana sequentially, in a clockwise direction covering the entire compound wall. The murals serve to emphasise human values of honesty, faith, and devotion.