Poznań, officially the Capital City of Poznań, is a city on the River Warta in west-central Poland, within the Greater Poland region. The city is an important cultural and business centre, and one of Poland's most populous regions with many regional customs such as Saint John's Fair, traditional Saint Martin's croissants and a local dialect. Among its most important heritage sites are the Renaissance Old Town, Town Hall and Gothic Cathedral.
Poznań is the fifth-largest and one of the oldest cities in Poland. As of 2019, the city's population is 534,813, while the Poznań metropolitan area comprising Poznań County and several other communities is inhabited by over 1,1 million people. It is one of four historical capitals of medieval Poland and the ancient capital of the Greater Poland region, currently the administrative capital of the province called Greater Poland Voivodeship.
Poznań is a center of trade, sports, education, technology and tourism. It is an important academic site, with about 130,000 students and Adam Mickiewicz University, the third largest Polish university.