This year marks King Carl XVI Gustaf's 50 years as Sweden's head of state. On April 27, King Carl Gustaf and Queen Silvia visited Uppsala County. The King and Queen visited Uppsala Art Museum at Uppsala Castle in Uppsala. As part of the celebration of the King's 50th anniversary on the throne, King Carl Gustaf and Queen Silvia are visiting Sweden's 21 counties in 2023. King Carl Gustaf ascended the throne on 15 September 1973.