New Copenhagen

As part of his aspirations to strengthen Copenhagen as a regional centre, Christian IV decided to expand the area of the fortified city northwards.

His intention was to redevelop this area into a new district referred to as Ny København (English: New Copenhagen) or Sankt Annæ By (Saint Ann's Town).

The new Østervold would be a direct extension of Nørrevold, connecting it to Sankt Annæ Skanse, thereby increasing the area of the fortified city with approximately 40%.

After both Jutland and Scania had been occupied by enemy forces in the first half of the 1640s and the Kingdom's very existence had been threatened, work on the fortifications was resumed.

The new Østervold was constructed and a new project for the fortress at Sankt Annæ Skanse, with the layout of a bastioned pentagram, was completed in 1661.