(now Gdańsk). It is famous for the Battle of Westerplatte, which was the first clash between Polish and German forces during the Invasion of Poland and thus the first battle of the European theater of World War II. History Resort The resort/health spa on the peninsula Westerplatte was established around 1830 and had a beach, forested park, oceanside baths and health spa facilities. The transit depot In 1925 the Council of the League of Nations allowed Poland to keep 88 soldiers on Westerpl… (More on Westerplatte)