Heligoland (ˈhɛlᵻɡəʊlænd; Helgoland, ˈhɛlɡoˌlant; Heligolandic Frisian: deät Lun, the Land, Mooring Frisian: Hålilönj, Helgoland) is a small archipelago in the North Sea. A part of the German state of Schleswig-Holstein since 1890, the islands were historically possessions of Denmark, then became the possessions of the United Kingdom from 1807 to 1890, and briefly managed as a war prize from 1945 to 1952.
The islands are located in the Heligoland Bight (part of the German Bight) in the southeastern corner of the North Sea and had a population of 1,127 at the end of 2016. They are the only German islands not in the vicinity of the mainland. They lie approximately by sea from Cuxhaven at the mouth of the River Elbe. During a visit to the islands, August Heinrich Hoffmann von Fallersleben wrote the lyrics to "Deutschlandlied", which became the national anthem of Germany.
In addition to German, the local population, who are ethnic Frisians, speak the Heligolandic dialect of the North Frisian language called Halunder.
The island had no distinct name before the 19th century. It was often referred to by variants of the High German Heiligland ('holy land') and once even as the island of the Holy Virgin Ursula. Theodor Siebs summarized the critical discussion of the name in the 19th century in 1909 with the thesis that, based on the Frisian self-designation of the Heligolanders as Halunder, the island name meant 'high land' (similar to Hallig). In the following discussion by Jürgen Spanuth, Wolfgang Laur again proposed the original name of Heiligland. The variant Helgoland, which has appeared since the 16th century, is said to have been created by scholars who Latinized a North Frisian form Helgeland, using it to refer to a legendary hero, Helgi. The discussion is complicated by a disagreement as to which of the listed names really refers to the island of Helgoland, and by a desire for the island still to be seen as holy today.