Celebrating 2,500 years since the renowned Battle of Marathon, Athens International Airport teamed up with the environmental organization “Clean up Greece” and hosted at its premises the photo exhibition for the environment titled “Marathon around the World – The Journey of the Paper Bag”. At the exhibition which took place from November 17th 2010 to February 17th 2011 paintings that children from all over the world drew on paper bags were exhibited with the aim to raise environmental awareness.