Freti Danici or Sundt Accuratiss Delineatio.

Bird's-eye view of The Sound with Helsingborg, Landskrona and Elbogen, by Georg Braun and Frans Hogenberg. Inset with a view of Kronenborg Castle.

Translation of cartouche text: Accurate drawing of the Danish strait or sound.

COMMENTARY BY BRAUN (on verso): "At this place the islands of Zealand and Scania, with foothills rising on both sides, lie so close to each other that there is scarcely one mile between them. Through this strait, called Oresund, many rivers from Germany, Livonia, Sweden and Russia, which have entered the Baltic Sea, rush past due to a difference in altitude into the great sea between Jutland, Denmark and Norway. All ships that pass through the sound have to stop at this place in order to pay their respects to the castle as the royal residence by lowering their sails and to pay customs dues on their cargo to the royal treasurer."

This bird's-eye view from the west demonstratively presents the sound as a Danish inland sea, in order to counter the Swedish claims to it. The cities of Helsingborg, Landskrona and Malmö, which were Danish at the time, and the Island of Ven can clearly be seen. In the foreground is the city of Helsingor with its late Gothic cathedral of St Olai, completed in the 15th century. In the sound a sea batlle is taking place, and Kronborg castle is under attack.
This was a strategically important fortress, where the Sound Toll was collected from passing non-Danish ships. Kronborg castle entered world literature around 1600 as the scene of Shakespeare's play Hamlet, Prince of Denmark. (Taschen)

More about Frans Hogenberg. and Braun and Hogenberg, Civitatus [+]

Reference: Van der Krogt 4, 1766; Taschen, Braun and Hogenberg, p.303.