Sylt, the Saint Tropez of the North. The largest of the North Frisian Islands, it is 23.6 miles (38km) long and at its narrowest only 1,050 feet (320m) wide. On this, Germany’s favourite island, there are ten nature preserves, among them the dunes and heathlands as well as cliffs and lagoons. The most beautiful stretch of beach by far lies between Buhne 16 – a shack-like restaurant in the dunes – and the 30-meter-high Red Cliff. This fascinating cliff was created 120,000 years ago when glaciers deposited rock masses in the region.