Warsaw's Old Town UNESCO, Wilanow castle. Wroclaw's Salt Market square and the Centennial Hall UNESCO. Wieliczka Salt Mines UNESCO.Gdansk has a very charming old town around the Neptune Fountain, plus boat cruises on Martwa Wisla. Auschwitz-Birkenau, the largest Concentration and Extermination Camp erected by Nazi Germany, inscribed on UNESCO already 1979. The City Center of Krakow is around Rynek Glowny, a 13th century square, one of the largest in Europe, but there is also Wawel Castle and the Jewish Quarter, and much more. Torun, birthplace of the astronomer Copernicus, is also UNESCO, the old town and the ruins of the Castle of Teutonic Order. But the largest Gothic Castle (600 years old) in Poland is situated in Malbork UNESCO. Swinoujscie Landscape with 44 islands, a place to relax near the German border. Peace Churches in Swidnica and Jawor UNESCO, great interior. Kalwaria Zebrzydowska UNESCO, the huge pilgrimage site in the south. Medieval wooden churches (6) of Southern Malopolska UNESCO. Tarnowskie Gory mines UNESCO with underground boat ride. Flint mines Krzemionki UNESCO with interesting tour. Black Madonna in Czestochowa. Statue of Christ the King, highest in the world, located between Poznan and the German border, in Swiebodzin.