The white chalk cliffs of Rügen are among the most impressive natural monuments on earth, which the painter Casper David Friedrich immortalized for posterity as early as the 19th century. Germany's largest island with its seaside resorts from the Gründerzeit, its smaller side islands and peninsulas that give it its shape, its lagoon-like Bodden waters, the dense beech forests, the yellow rapeseed fields and the meadows, the shady tree avenues and the white sandy beaches is not only a magnet for tourists, but also a unique natural paradise in...