North Jutlandic Island in the context of "Zealand"

The Skagerrak (/ˈskæɡəræk/; Danish: [ˈskɛːjɐˌʁɑk], Norwegian: [ˈskɑ̀ːɡərɑk], Swedish: [ˈskɑ̌ːɡɛrak]) is a strait running between the North Jutlandic Island of Denmark, the east coast of Norway and the west coast of Sweden, connecting the North Sea and the Kattegat sea.

The Skagerrak contains some of the busiest shipping routes in the world, with vessels from every corner of the globe. It also supports an intensive fishing industry. The ecosystem is strained and negatively affected by direct human activities. Oslo and Gothenburg are the only large cities in the Skagerrak region.

Jutland (/ˈdʒʌtlənd/), historically known as the Cimbrian Peninsula, is a peninsula in Northern Europe that forms the continental portion of Denmark and part of northern Germany (Schleswig-Holstein). It stretches from the Grenen spit in the north to the confluence of the Elbe and the Sude in the southeast. The historic southern border river of Jutland as a cultural-geographical region, which historically also included Southern Schleswig, is the Eider. The peninsula, on the other hand, also comprises areas south of the Eider: Holstein, the former duchy of Lauenburg, and most of Hamburg and Lübeck.

Jutland's geography is flat, with comparatively steep hills in the east and a barely noticeable ridge running through the center. West Jutland is characterised by open lands, heaths, plains, and peat bogs, while East Jutland is more fertile with lakes and lush forests. The southwestern coast is characterised by the Wadden Sea, a large, unique international coastal region stretching through Denmark, Germany, and the Netherlands. The peninsula's longest river is the Eider, which rises close to the Baltic but flows in the direction of the North Sea due to a moraine, while the Gudenå is the longest river of Denmark. In order for ships not having to go around the whole peninsula to reach the Baltic, the Kiel Canal – the world's busiest artificial waterway, crossing the peninsula in the south – was constructed.

Funen (Danish: Fyn, pronounced [ˈfyˀn]) is the third-largest island of Denmark, after Zealand and Vendsyssel-Thy, with an area of 3,099.7 square kilometres (1,196.8 sq mi). It is the 165th-largest island in the world. It is located in the central part of the country and has a population of 469,947 as of 2020. Funen's main city is Odense, which is connected to the sea by a rarely-used canal. The city's shipyard, Odense Steel Shipyard, has been relocated outside Odense proper.

Funen belongs administratively to the Region of Southern Denmark. From 1970 to 2006, the island formed the largest part of Funen County, which also included the islands of Langeland, Ærø, Tåsinge, and a number of smaller islands.

The history of Schleswig-Holstein consists of the corpus of facts since the pre-history times until the modern establishing of the Schleswig-Holstein state.

Vendsyssel (Danish pronunciation: [ˈvenˌsysl̩]) is the northernmost traditional district of Denmark and of Jutland. Being divided from mainland Jutland by the Limfjord, it is technically a part of the North Jutlandic Island which also comprises the areas Hanherred and Thy. Vendsyssel is part of the North Denmark Region.

Vendsyssel neighbours Hanherred to the southwest and Himmerland to the south, across the Limfjord. Whether the island Læsø is also a part of Vendsyssel, is a matter of definition. The major towns of Vendsyssel are Hjørring, Frederikshavn, Brønderslev, Sæby, Hirtshals, Løkken, Nørresundby and, on its northern tip, Skagen. The dominating city is, however, Aalborg which is mainly situated outside Vendsyssel on the southern shore of the Limfjord with Nørresundby as a secondary, northern centre.

Han Herred or Hanherrederne is a traditional district in northern Jutland, Denmark. It lies between Thy in the west and Vendsyssel in the east. To the north it faces the North Sea (Skagerrak) and to the south the Limfjord. There are only two towns with more than 1,000 inhabitants, Fjerritslev and Brovst.

Hanherred is the central, but lesser known part of the North Jutlandic Island. Since the municipal reform of 2007, it is mainly a part of Jammerbugt municipality. The westernmost fringe with the villages of Frøstrup and Vesløs belongs to Thisted municipality and is sometimes erroneously thought to be part of Thy. The border to Thy is Arup Vejle and Tømmerby Fjord, while the border to Vendsyssel is the river Ryå, just west of Aabybro.