Of all the Ottoman imperial mosques that I've written about, the Sultan Mustafa Iskele Mosque may be the one that you don't need to see. It's a small structure, far removed from the monumental mosques that define Istanbul's historic core. Visiting it also requires a certain amount of effort. It is tucked away in Kadiköy, on the Asian side of the city, well beyond the most central areas.
Yet, that may be ...