Fredrikstad festning

Fredrikstad festning - Credit: Wikimedia Commons

Fredrikstad fortress (Fredrikstad festning) was a fortification in Fredrikstad, Norway. It was the base of the Østfold Regiment, with defence related responsibilities for the east side of Oslofjord.Østfold regiment Read more on Wikipedia

type: military installation
date from: 1663

Source: en.wikipedia.org