Frankly, the German Islands are propably anything but spectacular.
But if you ever wished to visit Borkum, Juist, Norderney, Baltrum, Langeoog, Wangerooge, Pellworm, Föhr and Sylt in one flight, then this is your chance.
Recommended aircraft: Islander or maybe Ju 52 or a Cessna. Or something faster.
Some runways are quite short.