Visit glorious Hagia Sophia, one of the most extraordinary buildings in the history of architecture. Constructed in 532 AD, for 1,000 years it remained the world’s largest and most magnificent cathedral before the Ottomans converted it to a mosque in 1453. See the Blue Mosque exterior (interior is under restoration), nicknames so for its interior covered with 20,000 brilliant, shimmering handpainted blue Iznik tiles. At the Islamic Arts Museum, see the examples of impressive Turkish decorative arts including illuminated manuscripts, and ancient carpets. Tour of the the famed Grand Bazaar, the world’s largest covered market housing some 4,000 shops.