Vendsyssel–Thy

Vendsyssel–Thy or Nørrejyske Ø (North Jutlandic Island) is the northernmost part of Denmark and the second-largest island of Denmark, separated from the north of the Jutland peninsula (the Danish mainland) by the Limfjord; prior to the 1825 flood, the region was not an island but part of the mainland, as the bodies of water which today constitute the Limfjord were freshwater and separated from the sea and each other by various landforms, flowing into the Kattegat Gulf by way of a river passing through Aalborg, Denmark's fourth-largest city. As such, the island is still culturally regarded as part of Jutland.