fredriksten fortress in halden

ages ancient antique architectural architecture attraction background blue brick bricks building castle citadel city cityscape construction culture defense europe exterior famous fort fortification fortifications fortress fredrikstenfortress haldenmunicipality heritage historic historical history house illustration landmark landscape military monument museum nordic norway old outdoors past protect retro rock scandinavia scenery sky southerncurtinewall stairs stone stronghold summer sunny tourism touristic tower town travel turret view vintage wall walls stfoldcounty