Oscarsborg Fortress

Oscarsborg Fortress
Oscarsborg Fortress
Drøbak Sound, Oslofjord, Norway
	Oscarsborg Fortress' Main Island seen from the south-west.
Type	Coastal fortress
Site information
Controlled by	Norway; Nazi Germany (1940–1945)
Site history
Built	1846–1855
In use	23 August 1855 – 28 June 2002
Battles/wars	Battle of Drøbak Sound
Garrison information
Past; commanders	Oberst Birger Eriksen

Oscarsborg Fortress (Norwegian: Oscarsborg festning) is a coastal fortress in the Oslofjord, close to the town of Drøbak in Akershus County, Norway. The best known part is situated on two small islets: Nordre Kaholmen and Søndre Kaholmen. In addition, the main artillery batteries were on the island Håøya and smaller batteries were on the mainland to the west and east of the fjord. The fortress is best known for sinking the German heavy cruiser Blücher on 9 April 1940. The fortress was military territory until 2003 when it was made into a publicly available museum and resort. In 2014, Oscarsborg Fortress was given protected status.

^ ^a ^b ^c Cite error: The named reference Overview was invoked but never defined (see the help page).
^ Cite error: The named reference Kongsberg was invoked but never defined (see the help page).

[Overview-1] Cite error: The named reference Overview was invoked but never defined (see the help page).

[Kongsberg-2] Cite error: The named reference Kongsberg was invoked but never defined (see the help page).

[1]

[2]