GEK TERNA Holdings, Real Estate, Construction S. A., together with its subsidiaries, engages in the construction, real estate, mining, electricity, and concession businesses in Greece, the Balkans, the Middle East, Eastern Europe, the United States, and internationally. The company is involved in the construction of motorways, rail networks, buildings, hospitals, museums, industrial facilities, hydroelectric projects, dams, power plants, etc. for public and private sectors; and the financing, management, and commercial operation of concession projects, such as motorways and parking stations.