Adventure Parks are a popular trend in London, and probably elsewhere, but they are based on a relatively new idea (in that last decade or so) that kids need opportunities for taking risks during play. So these parks are meant to be more daring and less safe-guarded.
The Princess Diana park is also based on a Peter Pan theme so the play equipment was modeled after bits of that story.
Then we took a stroll past Kensington Palace, through the gardens there, and over to the Round Pond.