From the medieval mazes of Croatia along the Adriatic Sea, to the centuries-old streets in Lindau, these island cities will not disappoint. https://on.natgeo.com/2BiMlxT

From the medieval mazes of Croatia along the Adriatic Sea, to the centuries-old streets in Lindau, these island cities will not disappoint. https://on.natgeo.com/2BiMlxT 

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