Basmo festning - Credit: Wikimedia Commons
Basmo fortress (Basmo festning) is a former fortification located in the north-western part of Marker municipality in Østfold county, Norway. The fortress was placed on the main road from Ørje. The site is situated near the Swedish border on an isolated mountain outcropping between lakes Rødenessjøen and Hemnessjøen. Read more on Wikipedia
Source: en.wikipedia.org