The Free City of Danzig (German: Freie Stadt Danzig; Polish: Wolne Miasto Gdańsk; Kashubian: Wòlny Gard Gduńsk) was a city-state under the protection of the League of Nations between 1920 and 1939, consisting of the Baltic Sea port of Danzig (now Gdańsk, Poland) and nearly 200 other small localities in the surrounding areas. Today we discover what remains of the lost nations border marker.