Fortress The hotels consists of three unique destinations. Our fortress hotels offer something unique, whatever the occasion and have had great significance for the history of Norway. At the fortress you will find our largest hotel; Oscarsborg Hotel & Resort. Only 50 minutes from Oslo, at Kongsvinger Fortress, you will find our latest addition; Fortress Hotel & Resort. Last but not least; Reenskaug Hotel, situated in the picturesque fortress town of Drøbak. In a beautiful setting with a historical framework, we create an experience you and your will never forget.