Few words about the Kastelli Castle
Kastelli is a seaside Byzantine castle in northwestern Kalymnos built on a characteristic rock of Cape Aspropountari. It is located opposite the Castle of Constantine Telentos and maintained visual contact with the Castle of Galatiani.
What we conclude from the image of the castle is that there was a very old fortification from the first Byzantine period and maybe even earlier, from the Hellenistic period. At some point in the mid-Byzantine period, in the 9th or 10th century AD for some reason the castle was abandoned.