Ancient Greece was known for its architecture like temples and pillars. It produced famous sculptures and pottery. The region had a mountainous landscape and many city-states like Athens. Greek mythology featured supernatural beings like Zeus, Hades and Poseidon. Society was divided into citizens, non-citizens and slaves. Notable philosophers included Socrates, Plato and Aristotle. Greece experienced important wars and periods of history. The Olympics were a religious sporting event held every four years dedicated to Zeus.