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
Minorities in Turkey industry. Approximately 15,000 Dutch live in Turkey. There are over 50,000 Germans living in Turkey, primarily Germans married to Turkish spouses, employees, retirees and long-term tourists who buy properties across the Turkish coastline, often spending most of the year in the country. In addition, many Turkish Germans have also returned and settled, and it is not uncommon to hear German being spoken on the streets of Istanbul by Turks. Levantines continue to live in Istanbul (mostly in the districts of Galata, Beyoğlu and Nişantaşı), İzmir (mostly in the districts of Karşıyaka, Bornova and Buca), and the lesser port city Mersin