Eretria is a coastal city located on the island of Evia in Greece. It has a rich history dating back to ancient times, known for its role in trade and as a significant naval power. The city was a member of the Delian League and played a part in various historical conflicts, including the Persian Wars. Today, Eretria is known for its archaeological sites, including ancient ruins and a theater. The city attracts visitors with its beautiful beaches and scenic views of the Aegean Sea. It also features a charming waterfront promenade, making it a popular destination for both tourists and locals.