Fossum Brogalleri is a historic military bunker and fortification located in Indre Østfold, Norway. Built in 1914, this structure served as part of Norway's military defense infrastructure during a period of heightened tensions in Northern Europe. The bunker represents the strategic importance of Norway's border regions and its role in regional security during the early 20th century.
As a tourist attraction, it offers visitors insight into Norway's military heritage and the evolution of defensive architecture in the Nordic countries.