Siege of Bohus Fortress
1678 CE.
Shown on the map at 57.862°, 11.999°.
The siege of Bohus fortress was a siege by Dano–Norwegian troops during the Scanian War. The Swedish defenders endured the siege for weeks before being relieved by reinforcements and forcing a Dano–Norwegian retreat.
Text from the Wikipedia article Siege of Bohus Fortress (1678), licensed CC BY-SA 4.0.