The Westerplatte Monument, also known as the Monument to the Defenders of the Coast (Polish: "Pomnik Obrońców Wybrzeża") is a war memorial located in Gdańsk, Poland, on the Westereplatte Peninsula in the Gdańsk harbour channel constructed between 1964–1966 to commemorate the Polish defenders of the Military Transit Depot ("Wojskowa Składnica Tranzytowa", or WST) in the Battle of Westerplatte, one of the first battles in Germany's invasion of Poland, which marked the outbreak of World War II in Europe.