The Lake District, Cumbria

The Lake District is the UK's go-to for couples who want scenery and space, and at 2,362 km² it's England's largest national park. Base yourself around Windermere — England's largest lake, over ten miles long — or Ambleside or Grasmere, and you can combine gentle lakeshore strolls, steamer cruises across Windermere or Ullswater, and more ambitious fell walks with some of the best views in England. The literary heritage adds depth — Wordsworth's Dove Cottage in Grasmere and Beatrix Potter's Hill Top are both nearby — and the region is dotted with characterful inns where a walk ends at a fire and a good dinner. The catch is logistics: the train reaches Windermere (with a change at Oxenholme), but a car makes the quieter valleys and passes far easier, and the weather is famously changeable, so pack layers and don't over-plan. It's the pick for active couples who'll happily swap city dining for fells and lake cruises; skip it if you can't bring a car or a wet weekend would sink the trip.