The one reason I wanted to go to Istanbul was Hagia Sophia. I new part of its history and always wanted to see it, and that wish finally came true. Hagia Sophia was HUGE! And according to stories I heard of it from few guides that walked by it has been rebuild many times. It has been orthodox church, catholic church and a mosque. Now it is a museum and you really can see all those phases in it.
xoxo Sweety Pie