Lake Marathon, the huge man-made reservoir formed by the Marathon Dam (built by an American company in 1925–31), used to enjoy unparalleled physical beauty as the sight of the water contrasted with the startling green of the surrounding pine forest. Although the devastating fires of 2009 eroded some of this beauty, the lake is still worth a visit if only to see the only dam in the world said to be faced with real marble. At the downstream side is a marble replica of the Athenian Treasury of Delphi. This is a main source of water for Athens, supplemented with water from Parnitha and the Boeotia region. If you are looking for a drink or snack (pasta dishes and pies with phyllo pastry are the chef's specialty), stop at the café-restaurant Fragma (www.fragma.gr) on the east side of the dam. Wonderful views glimpsed from the tall front windows help make this a perfect and refreshing stop on your way back to Athens from Sxinias beach.
8 km (5 miles) west of Marathon, down side road from village of Ayios Stefanos, Marathon, 19007, Greece