Erythrai Ancient City is a well-preserved Ionian city located in Seferihisar, Türkiye. Founded in the 7th century BC, Erythrai was a major center of trade and culture. The city is home to many well-preserved ruins, including a theater, a temple, and a necropolis. Visitors to Erythrai Ancient City can explore the ruins of the city's many buildings, learn about the city's history at the on-site museum, and enjoy the stunning views of the Aegean Sea.