At the Limania entrance to the Bisti, there are ancient remnants of the temple of Poseidon next to the small church of Agios Nikolaos. Further east, on the central flat hill of the Poseidon on the Bisti, one can see the stone foundations of the 5th Century BC temple of Athena, goddess of wisdom. Below the renovated white windmill (milos), facing the islands of Dokos and Hydra, is the ancient nobleman's tomb. Sadly, there is no trace left of the ancient theatre. It has been suggested that during the Ottoman occupation, the whole theatre, the two temples and most sections of the Frankish walls which surrounded the Bisti, were dismantled and transported over to the island of Hydra for construction.
Ancient Ermioni, with the fortified Poseideon citadel, which was built on the Bisti, used to be surrounded by 'Cyclopean' walls, whereby the foundations are still visible today on the northern side of the Bisti, in addition to many places around the present town. In the same area of the Bisti lie the remnants of the workshops, where the deep red and purple coloured porphyra was produced for dyeing the cloaks of soldiers, nobles and kings, one being Alexander the Great. By the windmill, there is an ancient noble's tomb, with the contents displayed in the new archaeological museum, in Nafplio. It is also likely that the warships of Hermione that were sent to support the ancient Greek wars against Troy, and the Persian fleet at Salamis, set sail on their historic journey's from the Poseideon Bisti peninsula. From this eastern point, there are superb panoramic views across the bay of Kapari, overlooking the island of Dokos and Hydra.
http://www.ermioni.info/ermioni-bisti
http://www.ermioni.info/place-of-interest/ermioni
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http://www.ermioni.info/