Aalborghus

Aalborghus Castle (Danish: Aalborghus Slot) is a castle in Aalborg, Denmark. It is a half-timbered (bindingsværk) castle built by King Christian III from 1539 to around 1555 initially as a fortification. A building had existed at the site before Christian III's castle. It stood south of the castle and is mentioned in the first documentation of Aalborghus, dating back to 1340.

It was owned by Margrethe I and was the death place of King Hans in 1513 who died in a horse riding accident. King Frederik I had originally intended to destroy the initial building around 1530 and moving to a different site to convert Aalborg's Franciscan monastery into a castle.

However he left the decision to his son Christian III, who later decided to demolish the original in 1539 and contracted the royal architect Morten Bussert to build a new fortified castle north of the old site, near the Limfjord.

A barrier wall was built alongside the fjord, and later in 1633, King Christian IV built a north wing facing the port, which was used as a granary for the storage of food supplies such as grain. A western wing was built to the same effect later, holding other supplies such as meats and fish.

In 1644, Aalborghus was besieged by Danish forces led by Vogn Vognsen, recapturing it from the Swedes who had captured it in January.