Rainbow Rocket Central

You'll find Rainbow Rocket Central just outside Cambridge, a sports venue that's proper fun if you've got kids who need burning off some energy or you fancy a go yourself. It's an indoor play and sports facility - think trampolines, climbing walls, and various activity stations set up to keep people occupied for a couple of hours. The place has the feel of a well-run leisure centre rather than anything fancy, which is exactly what it does well.

Best suited to families with younger children, though teenagers who aren't too cool for trampolines will get something out of it. Adults can supervise or actually join in, depending on what's on offer that day. It's the sort of spot you'd visit on a rainy Tuesday afternoon when the outdoor parks around Cambridge aren't cutting it anymore.

Opening hours are decent - they're open from noon on weekdays except Wednesdays, when they start at 8am, and they don't close until 10pm on Thursdays and Fridays. Weekends run 9am to 7pm. You'll want to check their website for pricing and whether you need to book in advance. Allow two to three hours if you've got kids who like this sort of thing.

Staying at one of the nearby caravan parks - Cherry Hinton's closest at 1.5 miles, or you've got options at Gayton Farm and Highfield Farm a bit further out - makes it a useful backup activity when the weather turns. It fits well into a broader Cambridge holiday where you'd do the colleges and punting on the good days.