Remarkably, though, there is a tolerance, albeit grudging, for both Christianity and Judaism in Turkey. As opposed to a dramatic lack of tolerance and downright hostility toward any other religion in any of the other "Muslim" nations.
The Synagogue in Istanbul is magnificent and is listed in the Holy Site guidebook that is handed to tourists outside the Blue Mosque (so-called).Several churches listed too.
Btw, I was shocked at the amount of Hebrew that I heard spoken in Turkey. Evidently, it's a hot tourist destination for Israelis...