The North Frisian Islands
The term covers both the North Frisian Islands in the narrow sense (in Schleswig-Holstein, Germany) and the Danish Wadden Sea Islands (in Denmark). However, culturally and linguistically, the Danish islands are usually not reckoned as being part of North Frisia, since they are not inhabited by native speakers of the North Frisian language. Occasionally, the remote island of Heligoland is also included in this group for reasons of administrative convenience, despite not being located in the Wadden Sea, since the island is home to its own unique dialect of Frisian.
The Dodecanese Island Chain (Cos Island)
Kos or Cos is a Greek island, part of the Dodecanese island chain in the southeastern Aegean Sea. Kos is the third largest island of the Dodecanese by area, after Rhodes and Karpathos; it has a population of 33,388 (2011 census), making it the second most populous of the Dodecanese, after Rhodes. The island measures 40 by 8 kilometres (25 by 5 miles). Administratively, Kos constitutes a municipality within the Kos regional unit, which is part of the South Aegean region. The principal town of the island and seat of the municipality is Kos Town.