Of course, I know Hagia Sophia and the Blue Mosque are beautiful, I've been there many times. but I think I haven't seen Aya Kiryaki and Akbıyık fountain. Our next stop is Aya Kiryaki Church! and than Akbıyık Fountain! :)
I also like the ideas visit of Hagia Sophia and Blue Mosque, I used to take pictures of them but I think I can't find them. So its an opportunity to go and visit again :)

Thank you very much!