Geoff Moulder Leisure Pool

The leisure pool in Boston is a functional, no-frills affair - the sort of place where families actually take their kids to burn off energy rather than Instagram the experience. It's got your standard indoor heated pools, a shallow end for the little ones, and enough space that you're not constantly bumping into other swimmers. The changing facilities are decent enough, and staff seem to know what they're doing.

This is very much a local spot, which means weekday afternoons are far quieter than weekends. If you're staying at Orchard Holiday Park or Appletree Holiday Park nearby - both just under four miles away - it's a genuinely handy option for a rainy afternoon or when the kids have had their fill of outdoor activities. Big Sky Hideaway Camping and Glamping, five and a bit miles out, is also within easy striking distance.

Worth noting: it's not the sort of attraction that'll keep teenagers entertained for hours, but for families with younger children needing a proper swim, it does the job. There's nothing fancy here, no slides or wave machines, just clean water and reasonable facilities. Check ahead for opening times and current admission costs, as these can shift seasonally. Allow a couple of hours if you're planning a half-day activity, longer if you fancy grabbing food at the café afterwards. Not a destination in itself, but a solid backup plan for your Lincolnshire break.