Temple E the most recent of the three, dates to 460-450 BC and has a very similar plan to that of Temples A and O on the acropolis. Its current appearance is the result of anastylosis (reconstruction using the original material) carried out – controversially – between 1956 and 1959. The peristyle is 25.33 x 67.82 metres with a 6 x 15 column pattern (each 10.19 metres high) with numerous traces of the stucco which originally covered it remaining. It is a temple characterised by multiple staircases creating a system of successive levels: ten steps lead to the entrance on the eastern side, after the pronaos in antis another six steps lead into the naos and finally another six steps lead into the adyton at the rear of the naos. Behind the adyton, separated from it by a wall, was the opisthodomos in antis. A Doric frieze at the top of the walls of the naos consisted of metopes depicting people, with the heads and naked parts of the women made of Parian marble and the rest from local stone.