Borkum is the westernmost and with almost 31 square kilometers, the largest of the seven inhabited East Frisian Islands. Parts of the island and the adjacent Watt belong to the National Park Wadden Sea. The island is also the area of ​​the town of Borkum, which has a nationally recognized North Sea spa numerous spa facilities. Like all other East Frisian Islands Borkum led to the rise of bath industry in the 19th century a political and mostly economic shadows in the County of East Frisia, which belonged from 1744 to Prussia. One exception was the whaling in Borkum who helped the island in the 18th century prospering, but had to be stopped 1,782th The ensuing economic depression lasted several decades. It was not until the onset From 1830 beach tourism, which assumed greater proportions from about 1870, has reversed this situation reversed. The island is almost completely dependent on tourism since then, allowing the inhabitants a stable livelihood. In 2011 249.742 tourists arrived, there were 2,266,456 overnight stays counted. From 1902 to 1996, Borkum with short breaks after the First and Second World Wars location of naval units, which at times had a greater economic impact on the island. In the first half of the 20th century Borkum stronghold was the bathrooms-Semitism.