OMG, I first read St. Stephen, then Bulgarian, then Orthodox, then church, and it took me a while to connect those words in my head, along with your post. Only finally did I manage to read the word 'Istanbul'. 😄
You took great pictures again. Of a church I haven't heard of, or I've heard of, but I've never paid attention to... Do you know that it doesn't look like a Bulgarian Orthodox church at all? It's really unique!