The First World War begins, and the Russian spa guests quickly leave. Hanko is a closed military area in 1916–1917.
The 3rd of April 1918
German troops arrive with ships in Hanko and the Red Guards flee the city. The Finnish civil war began on January 27th.
1919-1935
General Mannerheim is a resident of Hanko. In the years 1927–1933, he owns the café the House of the Four Winds.
The 16th of May 1921
The Monument of Liberty is erected in memory of the German landing.
The 1920s
An emigrant leaving Hanko has taken a photo on the steps of her home, and later she will send a photo of herself from the United States to show how well she is doing there.
1926
The city hall of Hanko is completed.
1927
A slide is opened on the Plagen beach, from which both children and adults descend on coconut rugs. It’s fashionable to have a tan.
The 30rd of November 1939
The Winter War begins and Hanko is bombed on the first day of war.
The 13th of March 1940
The Hanko Peninsula is leased to the Soviet Union as a naval base for 30 years. The residents of Hanko are given 10 days to evacuate the peninsula.
The 4th of December 1941
The Russians have quietly abandoned Hanko and the city is taken back by the Finns.
1942
The rebuilding of Hanko begins. The city hall and water tower have been destroyed and 80 % of the buildings have been damaged.
1954
Hyvon Kudeneule Oy is founded in Hanko. The factory manufactures among other things men’s underwear until 1977.
1961
Oy Koverhar Ab has started its production of iron. Ten years later a steel factory is launched. Production ends in 2012.
1969
Kone Oy beings making cranes in Hanko. Cranes are exported around the world. Production ends in 1987.
1974
The city of Hanko amortizes the port of Hanko for 1 million marks from the state.
1977
Tvärminne from the rural municipality of Ekenäs, Lappohja from the municipality of Tenala and both Täktom and Santala from the municipality of Bromarv are incorporated into the municipality of Hanko.
1983
Finnish becomes the majority language in Hanko.
The picture is from the National Sleepy Head Day on July 27, 1983.
2002
The Coastal Artillery Battallion of Hanko, which has operated in the city since 1921, is discontinued.
2008
The National City Park of Hanko is founded.
The 15th of May 2025
The Museum of Hanko opened its main exhibition Where Land & Sea Meet in the old factory facilities of the Manner’s mechanical workshop at Pitkäkatu 17.