Poland has a rich selection of Gold and Silver commemorative coins. In the year 2006 coins were launched in the series: "Animals of the World", "History of the Polish Złoty", "The Polish Calendar of Traditional Customs and Rituals", "Monuments of Material Culture in Poland" (previously "Castles and Palaces in Poland"),"History of the Polish Cavalry", "Polish Painters of the Turn of 19th and 20th Centuries" and various occasional coins.
References
Commemorative coins of Poland: 2006 Wikipedia(Text) CC BY-SA