Lost Garden

Tucked inside the Blenheim Palace estate, this one earns its name — the maze alone will keep kids genuinely occupied for a good stretch, and the zipline is always the first thing mine heads straight for. The climbing structure and water feature round things out nicely for the toddler-to-primary crowd, though fair warning: entry isn’t cheap, and you’ll feel that. Shaded seating is there, but on a busy summer day there’s never quite enough of it, so get there early if you want a decent spot to sit. The forest trails nearby make it worth turning the whole thing into a longer outing rather than just ticking off the playground.