Castles of Greece


Telendos, Kalymnos, Dodecanese,South Aegean

Castle of Telendos

or Castle of Agios Konstantinos  
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Castle of Telendos
On a rocky slope at the north side of the island Telendos, in Dodecanese
Region > Prefecture:   Greek Map
South Aegean
Municipality > Town:
City of Kalymnos
• Telendos
Elevation ≈ 140 m 
Time of Construction   Origin
Before 6th century AD  
Castle Type   Condition
Fortified Settlement  
In Ruins

The remains of a byzantine castle and settlement at the north side of the little island of Telendos opposite to Kalymnos, in Dodecanese.

The relatively modern chappel of St. Constantine has been built among the ruins of the castle.

The "castle" is small, remote and neglected but it is a very particular case if we consider the geological background of Telendos.


Unilt the 6th century AD, Telendos was part of Kalymnos. A devastating earthquake in 535 AD sunk part of the original island and its capital Pothaia, while Telendos became a separate island.

Taking into consideration these events and the bizarre location οf the castle, we can assume that the ruins are only part of the original settlement. The rest disappeared in the earthquake. The castle, as part of Pothaiα, must have been in use since antiquity and was abandoned in the 6th century AD.

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