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
The Landmark London was followed by several of the railway hotels it later returned to its original use, as demand for luxury hotels in London grew and the city centre expanded in the late 20th and early 21st centuries. The building was purchased by a Japanese company in 1986 and reopened as a hotel in 1993, under the name of The Regent, London. In 1995, it was purchased by the Lancaster Landmark Hotel Company Limited, and renamed The Landmark London. The Landmark Group is a Thai company which opened a hotel called The Landmark in 1987 and owns several other hotels in London.