Kensington Gardens

As seen in this picture with Diana walking through the gardens. This area is the the Italian Gardens area of the park and remains largely unchanged from when the film was filmed.

This area is completely at contrast to the other parts of the film, set in a dark and dingy prison cell. To me this scene is particularly poignant because of this. Diana, or Mary, walks through the gardens slowly, and with the poem being read throughout the film, highlights her days being numbered and she wouldn't see this beauty again. I think this was further highlighted by her clothes in this scene with them being very dark and gloomy. The black and white filming of the film also add to this gloom.