1. Saria, Karpathos
Best for: getting (very) off the beaten track
We’re not going to say ‘hidden gem,’ promise, but this sand-strewn cove lapped by water so clear you can see starfish tiptoe across the bottom is in the running for actually being one. Just note that this is no commercialised beach; in fact it’s a bona fida desert island, so bring your own water and buy a bag of the local herb pies at Pigadia’s old fashioned bakery before taking the ten-minute taxiboat trip to this blissfully remote island dotted with the ruins of barrel-roofed houses where pirates once lived.