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.
References:The first written record of church in Danmark locality date back to the year 1291. Close to the church are several stones with a Christian text and cross inscribed. The oldest parts of the present red-brick church are from the 1300s. In the late 1400s the church was enlarged to the appearance it has today. The church has been modified both internally and externally several times, among other things after the fires in 1699 and 1889. There are lot of well-preserved mural paintings in the walls.