The success of King Charles and Queen Camilla's 20-year marriage could boil down to their "unique sleeping arrangements," keeping separate bedrooms and even separate homes and enjoying their time apart.

According to a former palace staffer, the monarch, 76, and his wife, 77, maintain separate residences, with Camilla having her beloved home in Wiltshire, while Charles owns countless royal residences peppered across the country.

Meanwhile, the future Queen Camilla purchased Ray Mill House in Wiltshire in 1996 following her divorce from her first husband, Andrew Parker Bowles, the year prior. Ray Mill House is just 15 minutes from Highgrove and Camilla lived there full-time until 2003, when she moved in with Charles.