GEK TERNA Holdings, Real Estate, Construction S.A., and its subsidiaries are involved in construction, real estate, mining, electricity, and concession businesses across various regions globally. They undertake projects such as building motorways, rail networks, hospitals, and power plants for both public and private sectors, along with managing and operating concession projects like motorways and parking stations. Furthermore, the company develops renewable energy projects, operates thermal power plants, and engages in real estate acquisition and development activities, with its origins dating back to 1960 and its headquarters located in Athens, Greece.