On the island of Crete, the Samaria Gorge is a top attraction for lovers of the great outdoors. Measuring 16 kilometers in length and, at its narrowest point, only four meters wide, it runs from Omalos (1,250 meters) in the White Mountains down to Agia Roumeli, on the Libyan Sea.
Depending on your level of fitness, it will take five to seven hours to walk. It is steep in parts and rocky, so you should wear good hiking shoes and carry plenty of water. The gorge lies within the Samaria National Park, and is on the UNESCO tentative list.