Poznań [ˈpɔznaɲ] (Latin: Posnania; German: Posen; Yiddish: פוזנא or Poyzn) is a city on the Warta river in west-central Poland, with a population of 551,627 in the end of 2010. It is among the oldest cities in Poland, and was one of the most important centres in the early Polish state, whose first rulers were buried at Poznań's cathedral. It is sometimes claimed to be the first capital of the kingdom of Poland.