The Temple of Poseidon is an ancient Greek temple located at Cape Sounion, overlooking the Aegean Sea. Built in the 5th century BCE, it was dedicated to Poseidon, the god of the sea, and served as a significant religious site for sailors and travelers. The temple is known for its impressive Doric columns, of which 15 remain standing today. Visitors to the temple can enjoy stunning views of the coastline and the surrounding islands. The site is also rich in history, as it was a strategic point for maritime navigation in ancient times. The Temple of Poseidon remains a popular tourist attraction, reflecting Greece's rich cultural heritage.