 Small circular temples, "tholoi" were also constructed, as well as small temple-like buildings that served as treasuries for specific groups of donors.During the late 5th and 4th centuries BC, town planning became an important consideration of Greek builders, with towns such as Paestum and Priene being laid out with a regular grid of paved streets and an agora or central market place surrounded by a colonnade or stoa.The completely restored Stoa of Attalos can be seen in Athens.