Thessaloniki. 2.Visit the 'Natura 2000' Kerkini's lake  one of premier birding site in Greece about 90klms (90 minutes) from Thessaloniki 3.Located 100 klms from Thessaloniki, Olympus is the highest moutain of Greece home of the twelve gods of Greek mythology and swim in Litochoro village or Platamonas with it's famous venetian