 Balmoral Castle's gardens and ballroom are already popular attractions, but now King Charles is opening its doors to allow guided tours of some of its private rooms for the first time. The tours cost £100 or £150 with afternoon tea. Demand has been so high, tickets sold out within 24 hours. The tours run until August 4th, before King Charles and Queen Camilla arrive in Aberdeenshire for their annual summer break.