Great Wilbraham Common

The Common sits just east of Cambridge, a proper slice of proper countryside that doesn't require booking ahead or paying entrance fees. It's open grassland dotted with scrub and the occasional tree - the sort of place you'd walk straight past if you weren't paying attention, but stop for five minutes and you'll notice the birds. Lots of them. Skylarks, partridges, the usual suspects if you know what you're looking for. There's a reason it's a designated nature reserve.

For walkers, it's straightforward. No dramatic views or dramatic paths - just room to stretch your legs and think about something other than where you parked the car. Kids won't find it thrilling in the way a playground is thrilling, but if they're the type who like poking about in long grass and spotting insects, they'll be occupied for a good hour. Spring and early summer are best - the wildflowers come through and the bird activity peaks.

It works well as a breather between Cambridge itself and the nearby holiday parks. HappenOak Treehouse and Piggles Retreat are both within six miles, so you could easily tack on a morning walk here before heading back to your accommodation. The ground can be damp underfoot even days after rain, so proper footwear matters. It's free, it's accessible from the Cambridge side, and it asks very little of you - which is exactly what makes it worth the detour.