Wall from Toruń city.
Toruń [ˈtɔruɲ] (German: Thorn (Ltspkr.png listen), Kashubian: Torń, Latin: Thorunium, see also: other names) is an ancient city in northern Poland, on the Vistula River. Its population is more than 205,934 as of June 2009. Toruń is one of the oldest cities in Poland. The medieval old town of Toruń is the birthplace of the astronomer Nicolaus Copernicus.