Kjøkøy Fort

Kjøkøy Fort is a coastal fortification in Fredrikstad Municipality with concrete bunkers, gun positions, underground corridors, and military structures overlooking the Glomma river mouth. The installation spans a large area and displays typical wartime defense architecture with both underground chambers and exposed positions.

German forces built the fort in 1941 during their occupation of Norway and equipped it with coastal and anti-aircraft weapons by 1943. The installation served as part of Norway's defensive coastal network during the war years.

The fort displays marks and remnants from German occupation during World War II that visitors can still observe on the structures today. These visible traces help illustrate how military forces shaped the site during this era.

The site is today maintained by Norwegian coastal authorities while a school operates in the former barracks area. Visitors should prepare for uneven terrain and multiple underground structures that require careful exploration.

A natural ice-age gorge within the fort complex was adapted as a military trench and integrated into the defense system. This geological feature reveals how military planners incorporated natural terrain into their fortifications.