Johannisborg Fortress Ruins

Johannisborg was fortress built by John, Duke of Östergötland, between 1614 and 1639. It was purposed to protect Norrköping increasing clothing and weapon factories. In 1719 Russian army destroyed the fortress in the Great Northern War and only one tower and some walls survived.

Address
Postgatan, Norrköping, Sweden

Established
1614-1639