Poznan

Poznań is a city on the River Warta in west Poland, within the Greater Poland region. The city is an important cultural and business center 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 Poznań Cathedral.Wikipedia

Greater Poland, often known by its Polish name Wielkopolska, is a Polish historical region of west-central Poland. Its chief and largest city is Poznań followed by Kalisz, the oldest city in Poland.Wikipedia