Sark
Sark has no cars. You get around on foot, by bicycle or in a horse-drawn carriage, and the occasional tractor is the only engine you are likely to hear. It is a 35 to 50 minute ferry ride from Guernsey, small enough to walk from end to end, and in 2011 it became Europe's first International Dark Sky Community, so evenings end with stars rather than streetlights.
Bring a flashlight and a novel. Day-trippers come and go with the boats, so stay a few nights to have the lanes to yourself, and choose spring or early fall over the school vacations.
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