The Dockyard, Seal Bay

If you’re spending the day at Selsey beach, this nautical-themed spot in Seal Bay is worth factoring into your plans. The climbing structure, slides, and swings keep kids in that 3–12 range genuinely busy, and the whole thing is enclosed so you’re not constantly scanning the horizon for a runaway toddler. Picnic tables mean you can actually sit down and eat something, and the open grass field out the back gives older ones room to properly run around. It’s well laid out for parents to keep an eye on things without hovering over every move. A solid half-day out when you pair it with the beach.