 In the palace park are found, among other things, a "temple of Diana" (originally dedicated to Neptune) and the burial site of "Pompe", the dog of King Charles XII.Notwithstanding that the palace remains a military institution, the palace park is accessible to the public and is open daily between 6 AM and 10 PM.Three medieval villages at the location — Ösby, Bolstomta, and Lundby — were bought by Lord High Admiral Carl Carlsson Gyllenhielm (1574-1650) in the 1620s and subsequently unified into a single estate named "Karlberg" after himself.