Image application for phones and mobile devices of one of the most beautiful and famouscities today.Istanbul is the largest city in Turkey and rivals London as the most populous in Europe, with15,067,724 inhabitants in its metropolitan area in 2018. The vast majority of the population isMuslim, but there are also large numbers of lay people and a tiny minority of Christians andJews.It is the capital of the metropolitan area (büyükşehir) and the province of Istanbul, which ispart of the Marmara region. In the past it was the administrative capital of the Province ofIstanbul, in the so-called Rumelia or East Thrace.