4817 x 3759 px | 40,8 x 31,8 cm | 16,1 x 12,5 inches | 300dpi
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In 1807, Heligoland was seized by the British during the Napoleonic Wars. It became a centre of smuggling and espionage against Napoleon. Thousands of Germans fled to Britain and to the King's German Legion via Heligoland. In 1826, Heligoland became a seaside spa and soon it turned into a popular tourist resort for upper-class people. The island also attracted artists and writers, especially from Germany and even Austria who enjoyed the freedom of the benignly ruled (British) island, e.g. Heinrich Heine and August Heinrich Hoffmann von Fallersleben. It was a refuge for revolutionaries of the 1830 and 1848 German revolutions. Britain gave up the islands to Germany in 1890 (by virtue of the Heligoland-Zanzibar Treaty) and also gave up its interests in Madagascar to the French, in return for those countries surrendering their claims to the African island of Zanzibar (now a part of Tanzania), largely so the British could intervene there to suppress the slave trade.[citation needed] A "grandfathering"/optant approach prevented the Heligolanders (as they were named in the British measures) from forfeiting advantages because of this imposed change of status. Helgoland has an important place in the history of the study of ornithology, and especially the understanding of migration. The book Heligoland, an Ornithological Observatory by Heinrich Gätke, published in German in 1890 and in English in 1895, described an astonishing array of vagrant birds on the island and was a major influence on the future studies of bird migration, in Britain in particular. Heligoland U.S. English usually Helgoland, is a small German archipelago in the North Sea. Formerly Danish and British possessions, the islands (population 1, 650) are located in the Heligoland Bight (part of the German Bight) in the southeastern corner of the North Sea. They are the only German islands not in the immediate vicinity of the mainland and are approximately two hours' sailing time from Cuxhaven at the mout
