Wandering the bleak marshes of Romney, near Dungeness, is a surreal affair at the best of times, but when you spot one of the Denge sound mirrors, it becomes officially Tarkovsky territory. These three imposing concrete structures, two circular ones of 20ft and 30ft and one huge curved 200ft-wall, were constructed more than a century ago as early radar devices aimed at providing early warning of enemy aircraft approaching Britain across the English Channel. They weren’t terribly effective (it’s said you could actually hear the enemy approaching with the naked ear before the mirrors picked them up) but there they stand like some weird sci-fi sentinels. There’s no close-up public access, but join one of the guided walks run by the Romney Marsh Countryside Project and you’ll get a mine of interesting info, as well as some great photos.
Get there: By car in about two hours from central London, or by train from St Pancras International to Ashford International and bus to Lydd or Dungeness.