Kongsvinger Fortress - Credit: Wikimedia Commons
Kongsvinger Fortress () is located in the city and municipality of Kongsvinger in the county of Hedmark, Norway. It is situated on a hill west and north of the Glomma river, standing astride the ancient Vinger Royal Road, which connected Norway and Värmland, Sweden as well as on the north-south Norwegian route along the Glomma. As Kongsvinger formed a key junction point for these routes, fortifications were constructed there to protect against invasion from the east. Read more on Wikipedia
Source: en.wikipedia.org