Treaty of Copenhagen (1660)
The Peace of Copenhagen, concluded on 27 Maijul. / June 6 1660greg. in Copenhagen, Denmark, marks the end the state of war between the kingdoms of Sweden and Denmark-Norway during the Second Northern War.
Trondheim and Bornholm went two years after the Peace of Roskilde in Denmark again over possession. However, the island of Ven passed into Swedish possession. The still existing borders between Denmark, Norway and Sweden were confirmed.