Budolfi Church, now a cathedral, dates from the end of the 14th century and Aalborghus Castle, a royal residence, was built in 1550.Today, Aalborg is a city in transition from a working-class industrial area to a knowledge-based community.In Erik Pontoppidan's Danske Atlas (Danish Atlas) it was described as "after Copenhagen, the best and most prosperous market town in Denmark".
The area around the narrowest point on the Limfjord attracted settlements as far back as the Iron Age leading to a thriving Viking community until around the year 1000 in what has now become Aalborg.
In the Middle Ages, royal trading privileges, a natural harbour and a thriving herring fishing industry contributed to the town's growth.
The sites of what were two settlements and a burial ground can be seen on Lindholm Høje, a hill overlooking the city.
These large settlements, one from the 6th-century Germanic Iron Age, the other from the Viking Age in the 9th to 11th centuries, evolved at the narrowest point on Limfjord as a result of the traffic between Himmerland to the south and Vendsyssel to the north.
With its theatres, symphony orchestra, opera company, performance venues, and museums such as Aalborg Historical Museum and the Aalborg Museum of Modern Art, Aalborg is an important cultural hub.
The Aalborg Carnival, held at the end of May, is one of the largest festivals in Scandinavia, attracting some 100,000 people annually.
Its prosperity increased when the merchant- and trade association Guds Legems Laug was established in 1481, facilitating trade with the Hanseatic League, The king frequently visited the town, where he held court and stayed in the old Aalborghus.
The herring fishery linked Aalborg to the East coast of England, across the North Sea, both in commercial competition and cultural exchange.
Trænregimentet, the Danish regiment for army supply and emergency medical personnel, is also in Aalborg.
Aalborg University Hospital, the largest in the north of Jutland, was founded in 1881.
Aalborg traces its history back over a thousand years.