The UNESCO should consider strongly the idea of giving protection to this marvelous piece of architecture, in which melt the art styles and histories of both great empires and dominant world religions in peace.This monument is also important simply because it has influenced the development and evolution of European, Muslim and Christian art and architecture, which gives it a very important place in the human history. There are several reasons behind the need for this monument to be under the protection of UNESCO. Firstly, the mix of architectural styles makes the cathedral truly “stick out” as a very important cultural landmark. An example to this may not only be the support to the church’s massive dome- the pendentives, the intricate and colorful Byzantine mosaics , but also the minbars and the wooden minaret- which show the evident change in the cathedral’s purpose during the Ottoman empire times, but simultaneously gave it a charm like no other historical building in the world possesses- the mix between predominate Byzantium and a sprinkle of Ottoman style. Secondly, Hagia Sophia is one of the few monuments that on a grand scale influenced the architecture and art style of a big majority of constructions- from military to religious. For instance, the terrestrial line built by Theodosius II with its second line of defence was the leading reference for military architecture in Europe, while the cathedral also gave the standard for domes in mosque architecture- as in the progress “…Muslim architects developed enormous and varied types of domes…” (http://iieng.org/images/proceedings_pdf/E0516006.pdf) – some examples for influenced by the Byzantine Hagia Sophia mosques include the Dome of the Rock and the Umayyad Masjid. Finally, Hagia Sophia should be protected by UNESCO because of its historical significance and uniqueness- as it has been one of the main Christian cathedrals and the Imperial Mosque during Ottoman and Byzantine rule. Nowadays, this precious building is a museum, exposing the public to the beauty of the Middle Ages and Antiquity. In conclusion, I believe that the Hagia Sophia museum should be under UNESCO protection because of several factors- the monument is one of its kind in the world, its architectural and art styles are historically important and very unique , as well as the sole fact that the monument is the symbol of the unity between the two dominant world religions and it represents the beauty through the variety.