Ágora of Atenas
Athens was not so close to the sea as to suffer the attack of pirates, but it did have access to the port of Piraeus, and had a walled enclosure. With these advantages, Athenas became the main polis of Greece during the first millennium BC, in which we consider 4 periods: archaic, classical, Hellenistic and Roman, where both, spaces and its buildings, suffered transformations.
The Agora was a public space of citizen representation, crossed by the Panathenaic route that went from the acropolis to the southwest gate of the city.
At the moment the Hefesteón is conserved, and diverse rest of stoas, porticated buildings of great length, for multiple public activities under roof.