The new hospital is due to open one year and eight months after its original opening date in July 2019.
Calum Campbell, NHS Lothian chief executive, said that despite delays it is a “fabulous” facility.
He said: “I don't want to see children in hospital, but if they have to be in hospital this is the place to be."
The new site includes a children's emergency department, 242 beds, 10 theatres and wards, outdoor play areas and physical and mental health specialities.
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5. A consultant in The Pod
Consultant Dr Paul Leonard in The Pod area at the new Royal Hospital for Children and Young People Edinburgh. Photo: Jane Barlow
6. General X-Ray Room
General X-Ray Room in the Emergency Department at the new Royal Hospital for Children and Young People Edinburgh. Photo: Jane Barlow
7. Outpatients in The Pod
Outpatient Robbie Marshall, 11, with his father Pete Marshall, wait in The Pod area at the new Royal Hospital for Children and Young People Edinburgh. Photo: Jane Barlow
8. A consultant in the reception area
Consultant Dr Paul Leonard walks through the new reception area in the Emergency Department. Photo: Jane Barlow