An hour by train from London Waterloo sits a town most travellers speed past on the A3 without a second glance. Petersfield, in Hampshire, is exactly the kind of place worth stopping for: an 11th-century market town that happens to sit entirely inside the South Downs National Park.

The history here runs deep. Founded after the Norman conquest as a planned 'new town' on the old London-to-Portsmouth road, Petersfield grew wealthy on trade and has kept its historic centre and market square alive ever since. Farmers and artisans still trade in the square weekly, with a farmers' market on the first Sunday of each month. Nearby Petersfield Heath covers 69 acres of heathland with a pond, family-friendly facilities, and Bronze Age burial sites underneath it all.

The bigger draw is what surrounds it. The South Downs, the newest of the U.K.'s national parks, protects 631 square miles of rolling green hills, ancient woodland, rare lowland heath, and the chalk cliffs of England's southern coast. Petersfield makes a practical base camp for exploring on foot. The easy Goodyer Meadow Circular covers under a mile past Balancing Pond; the Steep Circular runs 7.5 miles over Wheatham Hill and the Shoulder of Mutton; and the Shipwrights Way links town to Queen Elizabeth Country Park in 4.5 miles. Just 3.5 miles out, Ashford Hangers National Nature Reserve offers steep wooded hillsides of beech, ash, and yew. Hardcore walkers can push on to the King Charles III England Coast Path — the world's longest coastal trail — reachable via the New Forest, 32 miles southwest.

Culture punches above the town's weight, too. Petersfield Museum and Art Gallery occupies a converted police station and courthouse, the Folly Market handles shopping duties, and the town hosts an annual Musical Festival and Spring Festival. Accommodation spans the range from upscale hotels and cosy B&Bs to glamping sites in the surrounding countryside.

For travellers, the appeal is logistical as much as scenic. Petersfield is about 20 minutes from Portsmouth by car or train, and roughly an hour from Waterloo, so it works as a car-free countryside escape from London or a stop on a road trip — the A3 and A272 meet nearby. It delivers national park access, a genuine market-town atmosphere, and decent food and culture without the crowds of better-known South Downs hubs like Lewes or Arundel.