Poland is a part of the global tourism market with constantly increasing number of visitors. The most popular cities are Kraków, Warsaw, Wrocław, Gdańsk, Poznań, Szczecin, Lublin, Toruń, Zakopane, the Salt Mine in Wieliczka and the historic site of Auschwitz – a former German nazi concentration camp in Oświęcim. The best recreational destinations include Poland's Masurian Lake District, Baltic Sea coast, Tatra Mountains (the highest mountain range of Carpathians), Sudetes and Białowieża Forest. Poland's main tourist offers consist of sightseeing within cities and out-of-town historical monuments, business trips, qualified tourism, agrotourism, mountain hiking (trekking) and climbing among others. Poland has become a favored travel destination for millions of tourists each year. From the lively beaches of Gdansk, Gdynia, and Sopot to the remote and unspoiled natural beauty of Bialowieza Forest, Ojcow National Park, and the Tatra Mountains, Poland offers visitors a range of experiences. Vibrant capital Warsaw, historical cities of Krakow and Wroclaw are still undiscovered, un-crowded travel destinations.