Tourism in Turkey is focused largely on a variety of historical sites, and on seaside resorts along its Aegean and Mediterranean Sea coasts. Turkey has also become a popular destination for culture, spa, and health care tourism.
At its height in 2014, Turkey attracted around 42 million foreign tourists, ranking as the 6th most popular tourist destination in the world. This number however declined to around 36 million in 2015, deteriorated to around 25 million in 2016 and still further in 2017, due to regional uncertanities, political tension with Russia, terrorist attacks and the unfavorable Erdogan regime image abroad.
Istanbul is one of the most 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, 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 become one of the biggest shopping centers of the European region by hosting malls and shopping centers, such as Metrocity, Akmerkez and Cevahir Mall, which is the biggest mall in Europe and seventh largest shopping center in the world. Other attractions include sporting events, museums, and cultural events.