A Turkish university in the heart of metropolis Istanbul was listed among the top 100 green academic campuses in the world.
Istanbul Technical University (ITU) came 54th on the Green Metric list among 780 universities around the world.
ITU has been steadily rising on green rankings for three years, said Mehmet Karaca, the university's rector.
Karaca emphasized that ITU would continue to strive for a higher place in the rankings, seeking to transform all of its campuses into sustainable living spaces.
ITU was the only Turkish university to make the top 100 to become the 28th greenest campus in Europe.
The Green Metric -- launched in 2010 -- is an initiative of the University of Indonesia and its indicators include setting and infrastructure, energy and climate change, waste, water, transportation and education.
Dutch University of Wageningen took first place in the list, followed by the University of Oxford and the University of California, Davis.