Along the coast of Athens, a vast complex of homes, hotels, marinas and more is taking shape. On the southern coastline of Greece’s capital, a long-awaited plan to transform the city’s former airport into the largest smart city in Europe is finally gaining momentum. After a decade of delays, a vision of the Ellinikon is emerging. The Marina Tower, soon to be Greece’s first skyscraper, is beginning to rise. Iron skeletons of condos are taking form. Standing on the marina, with a view of the Saronic Gulf on one side and the tower on the other, it’s possible to imagine the future city, which will feature the open spaces, sustainable energy sources and abundant green spaces that Athens currently lacks.