[2] It is the main town and the administrative seat of Haderslev Municipality and is situated in the eastern part of Southern Jutland.

Haderslev is home of Sønderjyske, which is an association football team that plays in the Danish Superliga since 2008.

In the following centuries the city prospered, building both the Gothic Cathedral and the second castle of Hansborg (burnt in 1644), which was similar to Kronborg.

The festival uses one of Haderslev's important trademarks, the red-bricked water tower near the park as its logo.

It belonged to South Jutland County and covered an area of 272 square kilometres (105 sq mi) with a total population of 56,116 (2011).

Neighboring municipalities were Christiansfeld to the north, Vojens to the west, Rødekro to the south, and Assens (on the island of Funen) to the East.