When Jean Baptiste Bernadotte became king of Sweden as Karl XIV he also came into ownership of Rosersberg Palace where he and his wife, Queen Desideria felt very much at home. Desideria lived at Rosersberg until her death in 1860. The royal apartments in the palace have not been altered since and have been little used, making them one of Sweden’s best preserved royal interiors from the period.
From 1874 to 2006 the wings of the palace were housed an infantry training school and civil defence school, as well as the Swedish Rescue Services Agency. Since 2008 it has also housed Rosersbergs Slottshotell. The crown still has a right of disposal, which means that the king has the right to make use of the palace and can influence its usage. Rosersberg Palace and its grounds have been listed for preservation since 1935.