Construction of the Hagia Sophia (Ayasofya Müzesi) began in 325 AD by Emperor Constantine the Great and was completed over 200 years later during the reign of Emperor Justinian the Great. For the next 1,000 years, Hagia Sophia remained the highest and most important church in Byzantine Christendom (Eastern Orthodox Christianity). In 1453, the Ottoman Empire breached the Theodosian Walls of Constantinople, and the Byzantine Empire, which had stood for over a thousand years, vanished into the dust of history. Hagia Sophia was subsequently converted into a mosque for the Muslim world. In 1932, Kemal Atatürk, the founding father of modern Turkey, ordered the conversion of Hagia Sophia into a museum and opened it to the public. The Christian mosaics, previously covered by white paint, were restored. Today, Hagia Sophia boasts mosaics from the Christian world and Koranic verses from the Muslim world, creating a melting pot of cultures and religions. In 2020, Turkish authorities decided to convert Hagia Sophia, once a museum, back into a mosque. Because our homestay was so close to the cathedral, we visited it over five times, each time offering a different view. The different lighting at different times of day creates a different impression of the cathedral.