Hagia Sophia
Hagia Sophia in Istanbul is a masterpiece that blends Byzantine architecture with Ottoman legacy. First a church, then convertecx to a mosque, and now combines a mosque and a museum inside, it has a lot story to tell about Istanbul's rich history.
Inside, there are grand domes, mosaics, and calligraphy reflect centuries of faith and art. Located in Sultanahmet, it draws visitors worldwide who marvel at its beauty.
Also with the speciliality of being a combination of both Christian and Islamic world and their background, Hagia Sophia is a certified Unesco World Heritage Site.