Early morning arrival in port of Katakolon, in Pyrgos, which in ancient times was the natural harbour for Ancient Olympia and in the Middle Ages was the site of the so called ''Pontikokastro'', or ''Beauvoir'' or ''Bel Vedere'' Castle. Katakolon is also known for being the birthplace of Yiannis Latsis, the Greek shipping multi-billionaire tycoon, who's paternal home operates today as Museum of Ancient Greek Technology as well as its historical lighthouse. Today, our optional excursion takes us by bus to Olympia, one of the most famous and important sites in the ancient world. Olympia is revered as the birthplace of the Olympic Games and the greatest Pan-Hellenic sanctuary for the worship of Zeus. The most thrilling site at Olympia is the very stadium, which looks much like it did more than 2,000 years ago. Explore the Temple of Hera, the magnificent temple of Zeus, the Philippeion, built to honour the family of Alexander the Great, and the Leonidion, lodging place for the athletes. We later visit the Olympia Museum, one of the most beautiful museums in the world, hosting many astonishing exhibits. Traditional lunch in the town of Olympia and optional visit to the museum of the History of the Olympic Games of Antiquity (provided it is open in the afternoon). Time at leisure and depart for Itea in the Gulf of Corinth. Overnight at sea.