Outer Hebrides, Scotland
Forty miles from the next inhabited piece of land, this Unesco-protected archipelago is so remote it's often cut off maps of Britain. Catch a boat here from Harris or Oban and you'll gawp at cliffs that soar higher than the Empire State Building as northwest Europe's largest seabird colony flutters overhead. The Gaelic-speaking population of Hirta, its main island, had dwindled to 36 by 1930, when it was evacuated. Today, wander along "The Street" to lock eyes with the wild Soay sheep that roam between crumbling stone houses tufted with grass. For an abandoned village with easier access, try Tyneham in Dorset.