Boden Fortress, Military fortification and museum in Boden Municipality, Sweden.

Boden Fortress consists of five main forts blasted out of the bedrock hills around Boden, each ringed by a 10–12 m wide storm ditch cut into the rock. On the fort crown, or hjässa, sit armored cupolas and gun wells; the 12 cm gun turrets were ordered from Bofors or St. Chamond. The concrete surface shown carries two rounded metal cupolas, one broad and shallow, the other taller and steeper, with a long gun barrel projecting from the nearer one.

The installation arose between 1901 and 1908 in response to concerns about Russian threats to Sweden's north. It was designed to safeguard the region's valuable iron ore deposits and railway transport networks.

The fortress reflects how Sweden aimed to protect its northern regions at the turn of the 20th century. Visitors today can observe this defensive thinking through the stone structures and gun placements built into the landscape.

Visitors can explore the site on foot, with portions accessible through guided tours. Sturdy footwear is advisable since the rocky terrain is uneven and some paths climb steeply.

The armour domes of the 12 cm guns weighed about 100 tons assembled; the heaviest single parts, some 25 tons, were hauled on sledges by 16 to 30 pairs of horses in winter. The guns and their rotating turrets were ordered from Bofors in Sweden or St. Chamond in France.