Poland is a central European country with over 38 million people. Its capital and largest city is Warsaw, located along the Vistula River. Warsaw was largely destroyed during World War II but has since been rebuilt. Other important cities include Gdańsk, the birthplace of the Solidarity movement; Kraków, the former royal capital and a UNESCO World Heritage Site; and Wrocław, known for its bridges connecting the city's islands. In 2012, Poland hosted the European Football Championship with matches held in Warsaw, Gdańsk, Poznan, and Wrocław.