http://agathe.gr/democracy/state_religion.html
State Religion: The Archon Basileus There was no attempt in Classical Athens to separate church and state. Altars and shrines were intermingled with the public areas and buildings of the city. A single ... He wears a short tunic with a cloak over his shoulders, a helmet, and greaves. His shield, shown in a perspective, three-quarter view, is behind him. The king archon held office in the Royal Stoa, a small colonnaded building along the west side of the Agora square. It was built at about the same time as the Kleisthenic reforms, in about 500 B.C.