Denmark's Crown Prince Frederik and his Australian-born wife, Crown Princess Mary, are to return to her homeland in November for their first official visit in six years, according to Canberra. The Danish royals will visit Sydney, Melbourne and Canberra during their tour from November 19-26, which Australian Prime Minister Julia Gillard said would be hosted by the government. "I look forward to welcoming the Crown Prince and Princess to Australia," Gillard said in a statement. "This is their first official visit to Australia since 2005." Since then, the pair have been to Australia twice in a private capacity. US President Barack Obama is due to visit earlier the same week