Another of London's most visited museums, The Natural History Museum, features a grand entrance hall which, for decades, contained an impressive life-size model of a dinosaur.
I was delighted. A few steps brought me into the hall of the building. In this room no light was hanging. But I could see the form of a young man about my own height, wearing clothes like those I myself was wearing.
Outside in the hall he nearly ran into Dudley, who had been lurking behind the door, clearly hoping to overhear Harry being told off. He looked shocked to see the broad grin on Harry's face.
Harry and Hermione nodded and they hastened towards the double doors into the Entrance Hall, slowing down as they stepped over the threshold to walk sedately past the examiners.
What they were to give, neither heard, for both crept into the dark hall, and, sitting on the stairs, held each other close, rejoicing with hearts too full for words.
Harry looked around and glimpsed Snape a short way away, moving between the tables towards the doors to the Entrance Hall, still absorbed in his own exam paper.
The spacious home they share with their younger children radiates health and caring, from the vegan-centric pantry to the meditation room off the foyer.