Festningen/Akershus Fortress is situated on the cliffs of Oslo harbor. It is a popular recreational area in the city with its beautiful green surroundings. The fortress has been at the center of the nation's growth and development for 700 years, and has become a culture arena. Høymagasinet was originally the fortress's hay storage unit and is one of the city's listed historical buildings. Høymagasinet at Festningen is one of the UNCONTAMINATED festival's locations.