Tourism in Turkey important tourism spots not only in Turkey but also in the world. There are thousands of hotels and other tourist-oriented industries in the city, catering to both vacationers and visiting professionals. Turkey's largest city and metropolis and a leading global city, Istanbul, has a number of major attractions derived from its historical status as capital of the Byzantine and Ottoman Empires. These include the Sultan Ahmed Mosque (the "Blue Mosque"), the Hagia Sophia, the Topkapı Palace, the Basilica Cistern, the Dolmabahçe Palace, the Galata Tower, the Grand Bazaar, the Spice Bazaar, and the Pera Palace Hotel. Istanbul has also recently
Azerbaijanis in Turkey Azerbaijanis are sometimes referred to as "acem" (see Ajam) or "tat". They currently are the largest ethnic group in the city of Iğdır and second largest ethnic group in Kars, where they constitute majority in the district of Akyaka (). Azerbaijanis first settled in what is now Turkey during the period of Safavi governance over Kars and neighbouring areas. Their numbers grew during the first half of the nineteenth century, when following the Russo-Persian War (1804-1813), the Russo-Persian War (1826-1828) and the respectively out coming Gulistan and Turkmenchay treaties between Persia and Russia, Persia was forced to cede sovereignty over