2The Temple of Poseidon at Cape Sounion

Perched dramatically on a cliff overlooking the Aegean Sea, the Temple of Poseidon at Cape Sounion is one of the most picturesque ancient ruins in Greece. Built in the 5th century BC, this temple honored Poseidon, the god of the sea, and served as a beacon for sailors navigating the treacherous waters below.

The temple’s white marble columns contrast beautifully against the deep blue sea, creating a breathtaking view, especially at sunset. According to legend, this was the spot where King Aegeus leaped to his death, giving the Aegean Sea its name.