| 28 June 1956 | The first workers’ protest against the totalitarian system erupts in Poznań (this is known in Poland as Poznań June). |
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| 3 June 1979 | Pope John Paul II arrives in Gniezno, the first pope ever to visit Wielkopolska. The pontiff makes subsequent pilgrimages to Poznań in 1983 and 1997, Gniezno in 1997, Kalisz in 1997 and Licheń Stary in 1999. |
| 12 Mar 2000 | The millennial anniversary of the Congress of Gniezno is commemorated. The ceremony is attended by the presidents of Poland, Lithuania, Germany, Slovakia, and Hungary, and a papal legate. |
| 1 May 2004 | Wielkopolska, along with the rest of the country, joins the European Union. |
