What city state was anthens enemy?

Athens' primary enemy was Sparta, which was a prominent city-state in ancient Greece. The rivalry between Athens and Sparta culminated in the Peloponnesian War (431-404 BCE), a protracted conflict that pitted the democratic and naval power of Athens against the militaristic and land-based strength of Sparta. Their differing political systems and alliances further fueled tensions, leading to a significant shift in power dynamics in ancient Greece.