This is the interior of the stunning Yenişehir Çarşı Camii. It is on the same street as the Tarlabaşı Pazar (‘çarşı’ means shopping district in Turkish). This mosque is brand new (about fifteen years old). Here is a look at the exterior (scroll down a bit).  Here is an overhead view of the mosque and the neighborhood. It is not clear if it was part of the controversial urban renewal/gentrification plans afoot (which may or may not be proceeding, given Istanbul’s bureaucracy).

Here is a view of the back of the mosque from a side street for a perspective on the neighborhood.