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
Stone City, Iowa revitalize the town with new families without losing the charm of old Stone City. Many of the remaining buildings have been listed on the National Register of Historic Places. In 1952 the quarries underwent an economic revival under a new owner. The Stone City quarries have continued to grow and have become one of the largest quarries in the Midwest. The "Stone City quarries" now ship stone all over the United States. The stone from the banks of the Wapsipinicon River can be seen in both old and new construction, not just in Iowa, but across the United States. One