Which peninsula is mainland Denmark and extends northward between the North Sea and Baltic Sea?

The Jutland Peninsula is mainland Denmark and extends northward between the North Sea and Baltic Sea.

Jutland, called Jylland in Danish, forms the continental part of Denmark. Its northern tip is connected to the rest of the peninsula by the Limfjord region, while its southern portion continues into Germany. Denmark’s islands, including Zealand and Funen, are not part of Jutland.

The peninsula’s western coast faces the North Sea and is known for dunes, sandbanks, and tidal landscapes. Its eastern side borders the Kattegat and Little Belt, with the Baltic Sea lying farther southeast. Aarhus, Aalborg, and Esbjerg are major Jutland cities.

Jutland is sometimes mistakenly treated as synonymous with Denmark, but the country also includes many islands and the autonomous territories of Greenland and the Faroe Islands. The historic Jutes, an early Germanic people, gave the region its name.