You will visit Hagia Sophia - Built by the Emperor Justinian when Istanbul was Constantinople, this magnificent example of Byzantine architecture boasts a massive dome, a lengthy nave, and an interior decorated with marble, precious stones, and pillars from Ephesus. Hagia Sophia is considered a unique monument in world architecture, and it's magnificence and functionality has been a good example in construction of countless Ottoman mosques. Hagia Sophia with its exceptional history constitutes a synthesis between east and west. This monument is one of the wonders of the world that has remained intact until the present day. Hagia Sophia - Istanbul One can find many attractions in Hagia Sophia - interesting forms of Byzantine architecture, mosaics of the Christian period as well as structures added during the Ottoman era.You will spend approximately 1,5 hours at Hagia Sophia.