Athens was originally inhabited in the Mycenean era, but was not in that period a major city. It grew in power through the archaic age, and after the Persian wars became one of the most powerful city-states in Greece. The patron deity of Athens was the goddess Athena, and the Parthenon was her main temple. Athens was the central city of the city-state of Attica. At the center of Athens was a high, fortified hill called the Acropolis, which was the site of many important temples. Outside the Acropolis was the main area of the city, including the agora (marketplace), the theater of Dionysius, and houses of most inhabitants. Outside the city were important sites including the port Piraeus, which was a center of Athens' quite significant naval power and the fields where citizens of Attica grew food. During the classical period, Athens was home to many great playwrights including Aeschylus, Sophocles, Euripides, and Aristophanes and the famous philosophers Plato and Aristotle (who traveled from Stagira to Athens to study with Plato).