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http://www.mesogeia.net/trip/kos/koscastle1_en.html
and
http://www.mesogeia.net/trip/kos/koscastle2_en.html
It was constructed in the 15th century by the Knights of the Order of St John that ruled the island for about 200 years.
Weblog of The Gate to Greece. Mainly about Athens and Piraeus because I live here and especially about food because I love it.