Theme parks, high ropes and climbing. Check the height limits before you promise anything.
Steam trains along Preston's dockside with a museum shed full of engines, a playground and a tea room all on one ticket that covers all-day travel. A Saturday railway, so check the calendar before you promise anyone a train.
High ropes and treetop courses in the grounds at Walton Hall. Reviewers rate the value, but frame it as one for the bigger, braver kids.
A theme park deliberately built for ages 2 to 13 rather than teenagers, so both of them can ride most of it. The classic full-day option on your doorstep.
The best age match of anything on this list. Reviewers put the sweet spot at 2 to 10 and say a 4-year-old can do essentially the whole park; the map colour-codes areas by age and puts mini zipwires beside the full-size ones. Budget four to six hours.
The cheapest real activity anyone is recommending this summer, and it's indoors. An hour of play for a fiver a head, with picnic benches for when you need to sit down.
Two rides, a 4D cinema, build zones and Manchester's skyline done in miniature bricks. Squarely aimed at 3 to 10, and it knows it: adults can only visit with a child.
Real snow all year round at the venue Manchester still calls Chill Factore. Little ones get the Snow Park with sledging and slides; older kids can learn to ski or board on the UK's longest indoor slope.