If you're visiting St. Peter-Ording, surfing instructor Sonja Behrendt recommends the dune known as Maleens Knoll, the old harbor in Tönning, and Café Éclair.
Read more:
http://www.dw.de/discover-germany-the-travel-guide-2013-08-17/e-16969196-9798?maca=en-podcast_discover-germany-en-4493-xml-mrss#17024607