Originally Posted by Ingrid Cecilia
One reason that the royal family do not own any castle besides Solliden is that Bernadotte is a new dynasty. The royal castles were build by earlier dynasties and was owned by "the crown"(the state). The Bernadottes build Rosendahls castle( it is more of a pavillion), Sofiero and Solliden. They payed for these buildings with their private money. I do not know how it came that Rosendal is owned by the state, but Sofiero was left to the city of Helsingborg in Gustaf VI Adolf's will.
When Oscar II died in 1907, Gustaf V, Prince Oscar, Prince Carl and Prince Eugen decided to turn Rosendal Palace into a museum dedicated to Karl XIV Johan and the family of Bernadotte in general. The palace as a museum officially opened its doors in 1913; it's still open to public in summer.
Since it is the government, and not the royal family, who has paid for maintaining the palace, it became state owned.
Thank you for the interesting information; I never knew the Bernadottes only built three palaces.