Dimmer Reserve

The South Downs around Petworth hide a proper gem in Dimmer Reserve, though you'll need to know where you're looking or you'll sail right past it. This is a working landscape rather than a manicured visitor attraction - rough grassland and scrub that's managed to support some genuinely rare plants and insects. The reserve itself is small and unassuming, which is exactly why it matters. Botanists and wildlife photographers come here specifically for the specialist flora, but casual walkers can enjoy a gentle poke around without expecting theme-park infrastructure or marked trails.

It's the sort of place that rewards a slow morning rather than a ticked box on a list. You'll want good footwear because the ground gets boggy, and binoculars help if you're at all interested in birds. There's no visitor centre or facilities to speak of, so bring water and don't expect loos or a café. Allow an hour to browse properly, maybe longer if you're genuinely keen on identifying plants.

For a caravan holiday based at Graffham Camping just up the road, this slots in nicely as a quiet morning walk before heading into Petworth itself. Woodfire at Westerlands is equally close if you want somewhere with a bit more comfort. It's not one for restless kids or those after dramatic views, but if you're the type who gets excited about locally important habitats and doesn't mind a bit of wilderness, this is time well spent.