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
Medieval stone churches in Finland the 15th and early 16th century. Finnish medieval stone churches can be classified in three groups by their architectural style. The first group includes the oldest churches found exclusively in the Åland Islands. The second group is mainly built in the areas of Southwest Finland, Uusimaa and the southern parts of Tavastia. The youngest group is located in the historical provinces of Satakunta and Ostrobothnia. In this period, new churches were also completed in regions where they already existed. The last medieval stone churches were built in the 1550s. Finnish stone churches are small and simple, more like village churches.