This is a modern mosque, called the Sabancı Merkez Cami (Sabanc#i is the name of an industrialist who financed it). When I first visited the city in 1992 they were building it. Some nine years later I had the pleasure of attending a prayer service on a Friday, with thousands of people in a huge, bright space with gorgeous domes, in the classical style, but with marble that was so white as one rarely sees it.

This is the construction going on, notice that the scaffolding was done in wood.