Warsaw (/ˈwɔːrsɔː/ WOR-saw; Polish: Warszawa [varˈʂava] (About this soundlisten); see also other names) is the capital and largest city of Poland. The metropolis stands on the Vistula River in east-central Poland and its population is officially estimated at 1.8 million residents within a greater metropolitan area of 3.1 million residents,[3] which makes Warsaw the 7th most-populous capital city in the European Union. The city limits cover 517.24 square kilometres (199.71 sq mi), while the metropolitan area covers 6,100.43 square kilometres (2,355.39 sq mi).[4] Warsaw is an alpha- global city,[5] a major international tourist destination, and a significant cultural, political and economic hub. Its historical Old Town was designated a UNESCO World Heritage Site.