Desborough Park

The Thames Valley floor opens up at Desborough Park, a proper working nature reserve just outside Marlow where the river meanders through reed beds and wet grassland. You're looking at a landscape that's been managed for wildlife rather than for Instagram - think winter floods, breeding waders, and the kind of quiet that makes you remember why you left London.

The park itself is modest in scale, which is rather the point. This isn't a manicured country estate with tea rooms and gift shops. It's a functional nature reserve where volunteers have spent decades creating the right conditions for wetland species. You'll find observation points scattered through the site, and the walking is straightforward enough for families, though wellies are non-negotiable in winter.

Birders and serious wildlife watchers will get the most from a visit here - spring brings migrant warblers, and the breeding bird populations are decent if not spectacular. Casual walkers might find an hour's circuit satisfying; anything much longer and you'll notice the reserve isn't vast enough to justify a full afternoon. The real appeal lies in how intimately you can observe the landscape if you actually pause and watch rather than march through.

Stay at one of the nearby camping spots - Chiltern Retreat or Shillingridge are closest at under four miles - and you've got a proper riverside base for exploring the Marlow area. Combine this with walks along the Thames Path, and you've built a genuine week.