Poznań’s market square has seen its share of royalty. During the Swedish Deluge in 1657, King Jan Kazimierz and his court stayed in the Pinocci townhouse. The occasion for the visit was an international meeting being held in the city to plan a way to defeat the Swedes. The decisions made there proved to be pivotal for the future course of the war. An effective strategy was devised that ultimately helped drive the Swedes from Polish soil.