After its closure as a military facility in 2001, Høytorp quickly found new life as an outdoor area and cultural monument. Explore the dark passages, tower cannons and the great view from the top of the mountain on tours throughout the summer. A national fortification, along the lines of Akershus Fortress in Oslo and Fredriksten Fortress in Halden, is waiting to be discovered
located just northeast of Mysen in Indre Østfold municipality, is an impressive fortress.
Høytorp fort was built in the period 1912-1918 and was the main fort in the Fossum district's fortress.
Together with Trøgstad fort and the bridge galleries at Glomma, it was supposed to protect against attacks from the north, south and east.
The first contingent of recruits arrived at Høytorp Fort on 10 August 1915. During the battles against German forces in April 1940, the fort played an important role.
The fort was decommissioned as a military facility in 1994, but it is now protected by the National Archives and handed over to Eidsberg municipality in 2003.