United Kingdom
This one's extreme. You get here via a tiny six-seater plane or a white-knuckle three-hour boat trip from Shetland. The best (usually the only) place to stay is the Bird Observatory, where you get fed within an inch of your life on home baking. You can join the twitchers with their birding work, thrill to cliff-top walks bombarded by broody skuas, check out the knitting in the island museum, and just soak up the sound of sea and silence.
Fair Isle
Shetland
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