Põltsamaa Castle, founded by the Livonian Order in 1272, stands as a significant crusader fortress in eastern Estonia. The castle served as the residence of Livonia's King Magnus between 1570 and 1578. Between 1772 and 1773, the interior received elaborate rococo decorations by master stucco decorator Johann Michael Graff, whose work is considered among the most artistically accomplished rococo interiors in Estonia. Although heavily damaged in 1941, the castle tower has been restored with its unique historical dome, and visitors can climb to the viewing platform for panoramic city views. The gatehouse features a modern exhibition chronicling the castle's colourful history.