Killini, and medieval Glarentza, Klarentza or Klarentia are to the north of Pyrgos. In the Middle Ages this was the seat of Duke bearing its name, this title was usually given to the eldest son of the Frankish ruler of Achaia. It is currently the most important port linking the Peloponnese with Zakynthos and, in the summer, with Cephalonia as well.