In the settlement Koyroynochori we meet the Tower of Gkrek or Fragkopoyloy, one from the oldest towers of island were lived in succession by Ntelle Kartseri, Somarippa, Nte Mari and Fragkopoylo. It was built the 14th century, is constituted by three floors, and allocates courtyard. The windows they are absent in the underground strengthening the defensive form enemies. In the balcony exists sign that reports that in 1727 was belong in the family Somarippa. Today is inhabited and maintained in very good situation.
