historic xix century napoleonic war cannons battery on hovedoya island of oslofjord harbor with metropolitan oslo, norway in

aker bonaparte cannon christiania cliff cloud color colorful defense defensive destination europe explorer fjord gun harbor harbour horizon hovedoya island landscape maritime napoleon napoleonic nordic noreg norge norway norwegian oslo oslofjord oslofjorden ostlandet outdoor rock scandinavia scandinavian sea seascape seashore shore sightseeing summer tourist touristic travel tree trekking vacation war warfare water waterfront waterline weapon