It looks almost exactly like dark-ages castle layouts, with 4 bastion towers to cover the corners. Example of Malmo fortification from 1700: https://malmo.se/Up

It looks almost exactly like dark-ages castle layouts, with 4 bastion towers to cover the corners. Example of Malmo fortification from 1700: https://malmo.se/Uppleva-och-gora/Arkitektur-och-kulturarv/Malmos-historia/Stadens-historia/Fredlig-utveckling-pa-1700-talet.html https://malmo.se/Uppleva-och-gora/Arkitektur-och-kulturarv/M... You can see the Castle and its surrounding moat to the west.